a substance that is made by one part of the body but affects another part of the body.
A chemical substance produced by one gland or tissue and carried by the blood to other tissues or organs, where it stimulates action and causes a specific effect. Insulin and glucagon are hormones.
A chemical substance released into the body by the endocrine glands, such as the thyroid, adrenal, or ovaries. The substance travels through the bloodstream and controls the actions of certain cells of organs in the body. For example, prolactin, which is produced in the pituitary gland, begins and sustains the production of milk in the breast after childbirth.
A substance made by glands in the body that controls and affects certain functions.
A chemical transmitter transported by the blood stream or some other humoral connection from the cells that secrete it to the cells on which it acts. ~ See Also: Chemical transmitter.
chemical produced by the endocrine gland that circulates in the blood and has widespread action throughout the body.
A chemical produced by the human body and carried in the bloodstream from one part of the body to another. Hormones control growth, sex, and how the body works. Common hormones include: • Androgen: (AN-droh-gen) A term for any male sex hormone, such as testosterone. It is also found in small amounts in women. • Estrogen: (ES-troh-jin) A female hormone made mainly by the ovaries before menopause, and by other tissues afterwards. Estrogen levels often rise and fall every month before menopause. Estrogen is what helps a woman develop sexual features such as breasts and hips. It also controls a woman's monthly period and prepares her body for pregnancy. In breast cancer, estrogen may also promote the growth of cancer cells. • Progesterone: (pro-JES-ter-own) A female hormone released by the ovaries during a woman's monthly period. It gets the body ready for pregnancy and prepares the breasts to produce milk.
A chemical substance secreted by a ductless gland. Usually carried by the bloodstream to other places in the body, where is has its specific effect on another organ.
Natural chemicals made in one part of the body which travel in the bloodstream and make things happen in another part of the body. Some cancers are stimulated to grow by hormones, particularly the sex hormones (testosterone in men and oestrogen in women).
a secretion of an endocrine gland; it alters the physiological activity of target cells in the body
chemical messenger released in minute amounts by the endocrine, or ductless, glands and carried by the bloodstream to target tissues, where it produces either rapid or long-term effects. Most hormones fall into two major categories: PEPTIDES (chains of amino acids) and LIPIDS (including STEROIDS). Since the lack of any hormone may cause serious disorders, many hormones are now synthesized for use in treating such deficiencies.2 Huntington's disease
A chemical secreted by a gland that signals tissues elsewhere in the body.
A substance, made and released by cells in a specific organ or structure, that moves throughout the organism and exerts specific effects on specific cells in other organs or structures.(More? Endocrine Notes)
A chemical produced by the endocrine glands or tissue that, when secreted into body fluids, has a specific effect on other organs and processes. Hormones are often referred to as “chemical messengers,” and they influence such diverse activities as growth, sexual development, metabolism, and sleep cycles. Hormones also are instrumental in maintaining the proper internal chemical and fluid balance.
General term for any extracellular substance that induces specific responses in target cells. Hormones coordinate the growth, differentiation, and metabolic activities of various cells, tissues, and organs in multicellular organisms.
Gk to urge on, to set into motion] (n) a chemical messenger secreted by an endocrine gland into the bloodstream.
A chemical substance secreted in one part of an organism and transported to another part of that organism where it has a specific effect.
A chemical messenger transported by the blood and produced by an endocrine gland.
One of several chemical substances produced by cells of the endocrine system and secreted into the bloodstream to regulate the growth and/or function of a special organ or tissue in another part of the body. See text, Chapter 4. See also, "melatonin," "neurotransmitter," "neurohormone, " "pineal gland" and "serotonin."
A chemical, secreted into the blood stream, that specifically regulates the function of a certain organ of the bodv. Usually, but not always, secreted by an endocrine gland.
a substance produced by one tissue and conveyed by the blood to another tissue to stimulate activity in that tissue
A chemical released by special cells to tell other cells what to do. For instance, insulin is a hormone made by the beta cells in the pancreas. When released, insulin tells other cells to use glucose (sugar) for energy.
A chemical secreted by a gland, into the blood which travels to all parts of the body.
a chemical substance produced in an organ, which, carried to an associated organ by the blood stream, influences its functional activity.
chemical messenger produced by a cell that effects specific changes in the cellular activity of other cells.
a substance which can be transported through an organism and can affect growth, reproduction or metabolism (rate at which food is converted into part of the living thing). Certain synthetic hormones can be applied to cuttings to encourage quick root formation. They are particularly useful for slow rooting species. Hormones must be used with great care.
A chemical released in one organ or part of the body that travels through the blood to another area where it helps to control certain bodily functions. For instance, insulin is a hormone made by the beta cells in the pancreas and when released, it triggers other cells to use glucose for energy.
Chemicals produced by the testicles, ovaries, and adrenal glands that play a major role in reproduction and sexual identity.
Gk. hormaein, to excite] One of many types of circulating chemical signals in all multicellular organisms that are formed in specialized cells, travel in body fluids, and coordinate the various parts of the organism by interacting with target cells.
a chemical secretion released by a gland or a tissue, which affects or regulates the activity of specific cells or organs. Complex bodily functions, such as growth and sexual development, are regulated by hormones.
Chemical signals produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as metabolism or organ function.
biologically active chemicals that are responsible for the development of secondary sexual characteristics and other biologic activities
Substance formed in one organ or part of the body and carried in the blood to another organ or part where it selectively alters functional activity.
Chemical messengers that affect emotional and physical changes in the body.
A natural chemical produced in one part of the body and released into the blood to trigger or regulate particular functions of the body. Among the hormones the kidney releases are erythropoietin and an active form of vitamin D that helps regulate calcium for bones.
chemical substance produced in an endocrine gland which has a specific effect on the function of other organs in human body. Sex hormones are responsible for proper development and function of sex organs.
substance produced by one tissue and conveyed by the bloodstream to another to effect a function of the body, such as growth or metabolism.
A messenger molecule that helps coordinate the actions of various tissues; made in one part of the body and transported, via the bloodstream, to tissues and organs elsewhere in the body.
A chemical signal in the body.
Regulatory substance that controls metabolism and development, acts at low concentrations (e.g., less than one ppm, micromolar) and at a distance from its site of synthesis.
(syn. growth regulator) a chemical substance produced in one part of a an organism and transported in minute quantities to induce a growth response in another part, e.g. in plants, auxins, cytokinins, and gibberellins
A chemical which stimulates or suppresses cell and tissue activity.
A substance formed in a specialized gland or group of cells that has regulatory effects on another gland or group of cells. Hormones are usually transported in the circulation.
A substance originating in an organ or gland that is conveyed through the blood to another part of the body, stimulating it by chemical action to regulate functional activity or to increase secretion of another hormone. Many steroid hormones are substrates for drug-metabolizing enzymes.
(HORE-moan) Naturally occurring substance secreted by specialized cells that affects the metabolism or behavior of other cells possessing functional receptors for the hormone
A complex chemical substance which is secreted directly into the blood stream from a gland in one part of the body and initiates or regulates the activity of an organ or a group of cells in another part of the body.
A substance, usually a peptide or steroid, a product of living cells that circulates in body fluids or sap and produces a specific effect on the activity of cells remote from its point of origin; especially one exerting a stimulatory effect on a cellular activity such as growth or metabolism
chemical messenger that binds to receptors on target cells, which leads to some change in that cells physiologic state.
A biochemical that is secreted by an endocrine gland into the blood stream. It has a specific action on the body.
A molecule produced by endocrine glands that controls specific biological processes like growth and metabolism.
A type of chemical messenger, occurring both in plants and animals, that acts to inhibit or excite metabolic activities. Its site of production is distant from the site of biological activity.
substance secreted by cells or tissue that functions in the regulation of physiological activities.
Chemical of endocrine system transported by the bloodstream to stimulate tissue and organs.
The chemical messengers of the body, secreted by the endocrine glands, which regulate several functions including sexual development.
A secretion in the blood that stimulates organs into action.
A substance secreted by specific endocrine glands in the body, which directly enters the blood stream. Hormones have a regulatory or stimulating effect on one or several organs and can trigger various biochemical processes.
A biochemical "messenger" that sends messages through the bloodstream. Hormones are secreted by glands and are impacted by our diet. The hormone most dramatically affected by our diet is insulin.
(HOHR-mon) A substance secreted by endocrine tissue that changes the physiological activity of the target cell.
a substance which is produced by a gland. Hormones are important in controlling mechanisms within the body.
Any molecule produced by an organ or tissue, usually in extremely small quantities, that has a specific regulatory effect on the activity of another organ or tissue.
A chemical substance produced in the body that is carried through the bloodstream and causes the function of another gland.
A chemical substance produced by a gland or organ.
a substance produced by an endocrine glad that travels through the bloodstream to a different organ, where it has a specific effect
A chemical substance that is formed in one part of the body and moves through the blood to another part to affect certain bodily functions.
An organic chemical manufactured in minute quantities by plants that is a primary regulator of plant growth and development.
Chemical produced by the body. These regulate certain bodily functions.
one of the chemicals produced by the endocrine gland.
A chemical substance formed in one organ or part of the body and carried in the blood to another organ or part. It affects the activity of other organs or parts of the body through chemical action.
the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
a chemical produced at one location in the body (by a gland) that has it's effects on another part of the body (like the heart or bone)
a chemical secreted by cells in one part of the body that is transported
a chemical signal sent from cells in one part of an organism to cells in another part (or parts) of the same individual
a chemical substance carried throughout the body in the blood where it stimulates or suppresses cell and tissue activity
a chemical substance made by an endocrine gland and carried by the bloodstream to another tissue where it exerts some effect
a chemical substance made in one part of the body that travels (usually through the bloodstream) to a distant part of the body where it performs its work
a chemical substance of an endocrine gland
a chemical substancesynthesized by the cells of the endocrine gland secreted into theblood pulling through the capillaries in the endocrine gland
a chemical that affects the ways in which an organism functions
a chemical that helps body organs function
a molecule produced by a gland or tissue
a molecule that is secreted into the bloodstream by an endocrine gland
a natural chemical made by the body that works in a different part of the body than where it was made
an internally secreted compound formed in endocrine glands, that affects the functions of specifically receptive organs or tissues
an internally secreted compound, such as insulin or thyroxine, formed in endocrine glands
an organic chemical produced by one set of cells that affects a different set
a product of the endocrine glands
a regulating substance produced in a ductless gland and transported to other parts where that material becomes effective
a special chemical your body makes to control how different parts of your body work
a specific messenger molecule synthesized and secreted by a group of specialized cells called an endocrine gland
a substance, a molecule, that acts as a messenger in the blood
a substance made by one tissue and carried by the bloodstream to a target tissue
a substance made in different organs in your body which is then carried to another part of your body where it takes effect
a substance produced and secreted by a gland
a substance produced by a gland which effects the metabolic activity (The body's conversion of food into usable components and energy) of another cell, tissue, gland or organ
a substance produced by endocrine glands, released in very low concentration into the bloodstream, and which exerts regulatory effects on specific organs or tissues distant from the site of secretion
a substance that is produced in one tissue, and transported and affects another tissue
a substance which is produced in one part of the body, passes into the blood stream and is carried to other distant organs or tissues
a chemical substance formed in one part of the body and carried in the blood to another organ or part. Hormones can alter the functional activity, and sometimes the structure of their target organs or sites.
Chemical substance, produced by glands in the body, that enters the bloodstream an causes effects in other tissues. Treatment
a substance formed in endocrine organs and transported by body fluids to activate other specifically receptive organs.
Any substance secreted by specialized cells in organs such as endocrine glands. Hormones act as chemical messengers upon the regulation of metabolic processes throughout the organism
Substance produced by the body to control the functions of various organs.
is a chemical produced by the endocrine glands that is carried by the blood stream to various parts of the body. Hormones regulate metabolic and many other bodily functions.
A substance produced in the body by glands, that is released into the blood stream and affects other parts of the body.
a chemical transmitter substance produced by cells of the body and transported by the bloodstream to the cells and organs on which it has a specific regulatory effect. Growth, reproduction, metabolic processes, sexual attributes, and behaviour are dependent on hormones.
a substance secreted by a gland that is transported in the bloodstream to various parts of the body to regulate or modify bodily functions.
(Gr. hormaein, to excite) A specific organic product, produced in one part of a plant or animal body, and transported to another part where, at low concentrations, it promotes, inhibits or quantitatively modifies a biological process.
Substance produced by living cells that circulates in the bloodstream and affects cells and tissues far from where it originates.
the chemical messengers produced by the endocrine system that communicate orders throughout the body.
A "messenger" molecule of the body that helps coordinate the actions of various tissues; it is made in one part of the body and transported, via the bloodstream, to other parts, where it has a specific effect on cells.
Any of various chemical messengers, produced by the adrenal, pituitary, thyroid, ovaries, testes, and other glands, that have far-reaching effects throughout the body. Hormones regulate everything from growth and tissue repair to metabolism, reproduction, blood pressure, as well as the body's response to stress.
a natural chemical produced by the body.
(HOR-moan) - a chemical substance that regulates the activity of certain body functions and organs.
Chemical substances made in endocrine glands and essential for human biological processes.
A chemical substance produced by the endocrine glands of the body, which works by sending messages through the bloodstream.
A substance released by living cells in the body that produces a specific effect on the activity of cells in another part of the body. Also a synthetic substance that acts like a hormone.
A substance that regulates growth, metabolism, and reproduction and is secreted by various organs in the body.
A chemical which circulates through the body and affects the activity of cells.
a group of chemicals released by the body which control growth and sexual maturity
Chemical messenger (usually a protein or steroid) produced by an endocrine gland. Following its release into the blood stream a hormone acts on tissues at a distant site.
Hormones are natural chemical substances produced by the body some of which control the development and release of the egg from the ovary during each menstrual cycle.Natural and synthetic preparations of those hormones are used to increase the number of eggs produced in a cycle.
substance produced by a gland which acts on a distant target organ.
Chemical substance produced in body glands and circulated in blood.
A chemical manufactured in specialized cells that are secreted and used by other cells and tissues to perform their function.
A substance that stimulates the function of a gland.
Synthetic substance, such as a steroid, used to accelerate animal growth
A molecule produced in one part of body that exerts an effect in another part of the body.
A chemical substance which has a specific regulatory effect on the activity of a particular organ.
A substance manufactured by the body which regulates other organs. Gastrin is an example of this. Thyroid stimulating hormone and thyroid, hormone are also examples.
chemical messengers secreted by glands into the blood. They travel through the body and regulate the function of different organs. Testosterone, insulin and oestrogen are all examples of hormones.
A chemical substance formed in glands in the body and carried in the blood to organs and tissues, where it influences function, structure, and behavior.
Substance secreted by a gland into the bloodstream and carried to another part of the body, where it causes a physiological change.
a regulatory substance produced by an organism and transported in tissue fluids to stimulate specific cells or tissues into action
A "chemical messenger", made in an endocrine gland. It is sent through the blood to "target" body organs, stimulating certain life processes and stopping others, as needed by the body.
Chemicals excreted by glands.
Chemical messenger which regulates bodily functions such as blood pressure and the making of red blood cells.
a chemical produced by the body which is important in regulation of body function.
A chemical substance formed in one gland or part of the body and carried by the blood to another organ which it stimulates to functional activity.
Secreted by various organs in the body, hormones help regulate growth, metabolism and reproduction. Some hormones are used as a treatment following surgery for breast, ovarian and prostate cancers.
A chemical messenger produced by a gland or organ that influences a number of metabolic actions in our cells.
A substance that circulates through the body in the blood stream and promotes growth, reproduction and general well-being
A chemical produced by the body that regulates certain bodily functions. Synthetic (man-made) hormones are used in birth control pills and in medicines to treat certain conditions.
A chemical messenger fromone part of the body that circulates int he bloodstream and exerts an effect on another part
A substance made and secreted by a gland and carried in the bloodstream to parts of the body where it has a specific effect on the way the body works.
A chemical messenger within the body that is secreted by one type of cell and acts on another type of cell
Substance produced by an endocrine gland and transported in the bloodstream to a target tissue, where it carries on its function (stimulatory or inhibitory).
substance in the body that regulates certain organs.
A chemical product of the body that has a specific regulatory effect upon the cells.
traditionally, a chemical substance produced by one part of the body that has an effect on another part of the body.
Any one of a group of chemicals produced by the body's glandular tissues. They are transported by the blood stream. These substances interact with one another and are an essential part of the control of vital bodily functions.
A chemical substance that is formed in one part of the body, travels through the blood, and affects that function of cells elsewhere in the body.
Chemical substances secreted by organs or parts of the body, especially the endocrine glands, into the bloodstream. Each hormone has a specific regulatory or functional effect.
From the word 'hormon' meaning to excite or get moving. A hormone is a communicator, or mediating molecule that is released in one part of the body but regulates the activity or growth of cells in other parts of the body.
a chemical substance made in one part of the body that travels through the bloodstream and affects cells and tissues in another part of the body.
A chemical messenger produced by one of the endocrine glands, such as Human Growth Hormone, Testosterone, or Insulin.
A chemical, often a polypeptide, that acts as a messenger, relaying instructions to stop or start certain physiological activities. Hormones are synthesized in one type of cell and then released to direct the function of other cell types.
A substance produced in one part of the body and carried by the blood to another part of the body where it causes a response (eg, insulin, produced by the pancreas, that promotes the uptake of glucose by body cells). For more information see The hormones of the human (Kimball's Biology Pages, USA) and Types of hormones (Center for Bioenvironmental Research, Tulane and Xavier Universities, USA).
A natural chemical produced in one part of the body and released into the blood to trigger or regulate particular functions of the body. Antidiuretic hormone tells the kidneys to slow down urine production.
A chemical messenger that controls various bodily functions.
a substance created by one organ, transmitted to another organ by the blood, that causes some activity in the second organ due to a chemical reaction. For example, testosterone is a hormone found only in males.
A substance, produced by an endocrine gland, which travels through the bloodstream to a specific organ where it produces a stimulatory effect. close window
a chemical produced by a gland or tissue that is released into the bloodstream; controls body functions such as growth and sexual development
A substance produced by the body that stimulates activity by organs or tissues elsewhere in the body. Estrogen and progesterone are female sex hormones.
A chemical produced in one part of the body and released into the blood to trigger or regulate particular functions of the body. For example, insulin is a hormone made in the pancreas that tells other cells when to use glucose for energy.
1Chemical products of ductless glands that are carried by the circulatory system and that influence various physiological processes in the body. ..2 An organic molecule synthesized by a plant that exerts, even in low concentrations, profound regulation of growth and/or development.
A hormone is a natural body chemical, such as estrogen, that has effects on or controls other parts of the body. Synthetic hormones, such as birth control pills, are drugs similar to human hormones.
a substance secreted by an organ or gland into the bloodstream to be carried to other organs and glands where it has a specific effect; there are two types of hormone: steroid hormones (e.g., estrogen, testosterone) composed of cholesterol are fat soluble and can easily cross the cell membrane; nonsteroid hormones (e.g., insulin) composed of amino acids are water soluble, and cannot cross the cell membrane.
a chemical, produced by an endocrine gland, which circulates in teh blood and has wide spread action throughout the body.
A chemical substance that is formed in one organ or part of the body and carried in the blood to another part of the body, where it alters the activity of cells in the target organ.
A chemical messenger from one cell (or group of cells) to another. Hormones are produced to stimulate or slow down various body functions. The levels of some hormones increase ten-fold during pregnancy.
Chemicals made by one part of the body that travel through the bloodstream and provoke a response in another part of the body. For example, insulin is a hormone that is secreted into the blood by the pancreas. It regulates blood sugar levels by affecting how different tissues use glucose. Some cancers are stimulated to grow by hormones, particularly the sex hormones ( testosterone in men and oestrogen in women).
A chemical substance produced by the glands in the body that affects other tissues.
A substance produced by one organ and transported by the bloodstream to another to effect physiological activity, such as growth or metabolism. Hydrolysis A chemical reaction in which water reacts with a compound to produce other simpler compounds. Hydroxyapatite calcium phosphate salt. Hydroxyapatite is the main mineral part of bone of bone and teeth, and is what gives them their hardness. Hypertension Abnormally high blood pressure.
a chemical substance that is produced in the body. This substance regulates certain activities in the body. Hormones play important roles in growth, development and reproduction. Estrogen and testosterone are examples of hormones.
a substance that acts as a chemical messenger in the body, controlling various body functions.
A chemical messenger your body makes to tell your organs what to do. Hormones regulate many activities, including your growth, blood pressure, heart rate, glucose levels, and sexual characteristics.
(hore´ mone) [Gr. hormon: excite, stimulate] • A substance produced in one part of a multicellular organism and transported to another part where it exerts its specific effect on the physiology or biochemistry of the target cells.
A chemical substance produced by the body that has a specific regulatory effect on a target organ.
Chemical messengers which are produced in an endocrine gland and transported by the blood to other tissues where it influences metabolic activity (e.g., estrogen and insulin).
a complex chemical substance produced by a gland and carried by the bloodstream to influence other organs or body parts.
A chemical created by the body's glands and secreted into the blood in order to have an effect on an organ.
chemical messenger found in the blood
A chemical, produced by an endocrine gland, which circulates in the blood and has widespread action throughout the body.
A complex chemical substance created in a part or organ of the body. When released it initiates or regulates activity in an organ or group of cells in another part of the body. Hormones secreted by endocrine glands are transported through the bloodstream to their target organ. The amount of hormone secreted is regulated either by other hormones, by neurotransmitters, or simply when an excess of the organ's activity indicates a need to reduce the amount of the hormone produced. Other hormones are produced locally by the organs themselves and are common in the digestive tract.
a chemical substance produced by endocrine glands which causes specific effects on other cells
A molecule that stimulates specific cellular activity; made in one part of the body and transported via the bloodstream to tissues and organs. Examples include insulin, estrogen, and testosterone.
A chemical messenger secreted by a gland that then travels in the blood to act on other parts of the body.
A chemical secretion, such as estrogen or progesterone, that the body produces to stimulate or slow down various body functions. The levels of some hormones increase 10-fold during pregnancy.
Substance secreted by an endocrine gland that is transmitted directly into the blood and serves to regulate specific cellular or organ activity.
various chemicals in your body that send messages to other areas throughout the body.
Chemical product of the endocrine glands of the body, which, when secreted into body fluids, has a specific effect on other organs.
Chemicals that are secreted by glands in the body and then travel through the bloodstream to affect various functions of the body.
endocrine substance - a regulatory molecule, produced by an endocrine gland or endocrine or neuroendocrine cell, which is secreted into the blood stream to circulate widely in the body to interact with their target cells, tissues, and organs in order to integrate and control their metabolic activity and physiological functions; hormones may be made from cholesterol, the steroids, or from amino acids, the amine, peptide and protein hormones.
A chemical substance within the body that is secreted by one type of cells and affects another type of cells. Hormones are released directly into the bloodstream, other body fluids, or adjacent tissues. Hormonal actions can include stimulation or inhibition of growth, activation of the immune system, regulation of metabolism, and the production and release of other hormones.
A chemical substance that is released by an endocrine gland.
A substance produced by one part of the body that travels throughout the body and controls functions of other cells. Both insulin and glucagon are hormones: they are produced by the pancreas and travel through the body and control glucose metabolism in other cells.
The hormones produced by the body's endocrine system are an integral part of the Communication System. Just as the nervous system uses neurotransmitters to relay information, the endocrine system employs hormones in a similar fashion. Hormones are considered primary and critical to all metabolic function, and are produced under the direction of the master gland, the limbic hypothalamus, and its lieutenant, the pituitary.
A chemical substance released into the body by the endocrine glands such as the thyroid, adrenal, or ovaries. Hormones travel through the bloodstream and sets in motion various body functions. Estrogen an example of a female hormone.
(from Greek horman - "to set in motion") is a chemical messenger from one cell (or group of cells) to another. All multicellular organisms (including plants) produce hormones. The best known hormones are those produced by endocrine glands of vertebrate animals, but hormones are produced by nearly every organ system and tissue type in a human or animal body. Hormone molecules are secreted (released) directly into the bloodstream, other body fluids, or into adjacent tissues. They move by circulation or diffusion to their target cells, which may be nearby cells (paracrine action) in the same tissue or cells of a distant organ of the body. The function of hormones is to serve as a signal to the target cells; the action of hormones is determined by the pattern of secretion and the signal transduction of the receiving tissue.
A chemical substance produced in the body that has a specific regulatory effect on certain cells or a certain organ or organs.
A substance produced by one tissue or gland and transported by the bloodstream to another to effect or regulate physiological activity such as metabolism and growth.
a chemical messenger (e.g., adrenaline, testosterone) involved in the regulation and coordination of cellular and bodily functions. Hormones may act locally or be secreted into the bloodstream. See also cytokine, endocrine gland/endocrine system.
A substance secreted by specialized cells that circulates in body fluids and affects the metabolism or behavior of other cells that have receptors for the hormone.
a chemical messenger that is made in one part of the body and affects the functions of cells in various parts of the body.
secreted proteins that circulate in body fluids and produce a specific effect on the activity of cells.
A chemical messenger produced in the body, for example testosterone. Hormones can travel through the blood and have an effect elsewhere in the body.
A chemical produced in living cells that is carried by the blood to organs and tissues in distant parts of the body, where it regulates cellular activity.
a chemical released by the endocrine glands and other tissues to help control certain functions in the body. For instance, insulin is a hormone made by the beta cells in the pancreas, and when released, it triggers other cells to use glucose for energy.
a chemical messenger, often a steroid or peptide, produced in a small quantity in one part of an organism and then transported to another part of the organism, where it brings about a physiological response.
a chemical substance that regulates the activity of certain cells and/or organs; comes from the Greek word meaning "to set in motion." Hormones are made and secreted by glands.
A chemical that special cells in the body release to help other cells work. For example, insulin is a hormone made in the pancreas to help the body use glucose as energy.
a chemical messenger secreted by cells of the endocrine system and transported through ethe bloodstream to target cells with appropriate receptors where it elicits a response
The body's chemical messengers. Estrogen and progestin (a synthetic form of progesterone) are the main hormones involved in the reproductive process.
Chemical substance produced by endocrine glands--thymus, pituitary, thyroid, parathyroid, adrenal, ovaries, testicles, pancreas--that regulates many body functions to maintain homeostasis (a steady state).
Secretion from special glands within an animal's body which affects various body functions.
A chemical produced by an endocrine gland and released into the blood. It travels to other organs of the body where it produces its effect. More about this.
is Latin for a “chemical messenger,” such as growth hormone, testosterone or insulin.
A chemical released by one of the glands. Hormones travel through the bloodstream and control a number of bodily functions, including metabolic rate, arousal level, sugar output of the liver, and so on.
Classified as a chemical substance with a specific action (to stimulate, inhibit, regulate) on an organ or organs, the majority of which are produced by the endocrine system.
A substance produced by one tissue and conveyed by the bloodstream to another for metabolism and growth.
A chemical produced by an organ that travels in the blood to affect other organs.
A substance excreted in the body that is involved in regulating some bodily functions; examples include estrogen or testosterone.
A substance produced by a gland or tissue and released into the bloodstream to have a specific effect elsewhere within the body.
A chemical made by glands in the body. Hormones circulate in the bloodstream and control the actions of certain cells or organs. Some hormones can also be made in a laboratory.
A hormone is a substance that is produced in one part of the body, passes into the bloodstream and is carried to other distant organs or tissues where it acts to modify their structure or function.
Gk, hormaein, to set in motion], a complex chemical substance produced in one part or organ of the body that initiates or regulates the activity of an organ or a group of cells in another part of the body
a chemical secreted by body cells which diffuse into body fluids that alters the physiological activity of target cells within the body
A substance, usually a peptide or steroid, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as growth or metabolism.
A chemical substance that the body produces to regulate the activity of organs(s) or tissue(s).
A chemical substance the body produces to regulate the growth and functioning of certain cells and organs.
A naturally occurring substance in plants that controls growth or other physiological processes. It is used with reference to certain synthetic chemicals that require or affect growth activity.
A hormone is a chemical which serves as a messenger or as a regulator of a process in the body.
Hormones are substances that regulate processes such as growth, metabolism, and reproduction and influence behavior and the functioning of the immune system. They are made by an organ, gland, or group of cells and travel (often through the bloodstream) to other parts of the body.
a chemical substance produced by a gland that mediates activities in other parts of the body. Hormones travel throughout the bloodstream to act on target organs and regulate their activity.
A chemical "messenger" which is made and secreted by an endocrine gland and which targets one or more parts of the body, modifying its structure or changing the way it works.
A chemical substance produced by cells which circulates in the body and has its action at specific target tissue by binding to receptor sites at a cellular level.
a chemical messenger made by different glands in the body that is secreted into the bloodstream and acts to affect or control the function of other organs.
A chemical created in one organ by the endocrine system and transported by the bloodstream to other organs, where it has a stimulating effect
Chemical substance that controls the growth and development of a plant. Root-inducing hormones help cuttings root.
A compound that is secreted by one cell and travels through the circulatory system to affect the activities of cells in another portion of the body.
a substance secreted by a cell into the bloodstream for action at a different site.
Gk. hormon, stir up, set in motion] Signaling molecule secreted by one cell that stimulates or inhibits activities of any cell with receptors for it. Animal hormones are picked up and transported by the bloodstream.
a chemical, produced in the body by an organ, or cells of an organ, that has a specific effect on the activity of a target organ; e.g. epinephrine.
a chemical substance produced by specific body cells, secreted into the blood and then acting on specific target tissues.
A chemical messenger produced in one part of the body and released into the blood to trigger or regulate particular functions of the body in another part. Hormones are produced by nearly every organ system and tissue type but probably the best-known hormones are those produced by the endocrine glands associated with growth and reproduction.
From the Greek word meaning to stir up. A hormone is a chemical substance, usually secreted by endocrine glands or other specialized cells into the bloodstream, which performs some special function or change.
A chemical substance produced within the body which has "regulatory" effect on the activity of a certain tissue in the body. E, cortisol, and human placenta lactogen are hormones produced by the placenta which cause changes in the mother's body to prepare her for the pregnancy and birth. These hormones also have a contra-insulin effect.
A cell product in plant fluids, which has a specific effect on other cells.
a chemical messenger that is transported (often by the bloodstream) a relatively long distance from its source to the cells it affects. Insulin, vasopressin, testosterone, and cortisone are all examples.
A chemical substance that is carried through the blood to another part of the body, stimulating it to change its function or structure. Many hormones are produced by glands.
A chemical secreted from a part of the body (usually an endocrine gland) and carried in the bloodstream to another part to stimulate or retard its function.
An active chemical substance formed in one part of the body and carried in the blood to other parts of the body where it stimulates or suppresses cell and tissue activity.
A type of chemical messenger that regulates a process in the body. Hormones are usually produced in one organ and have an effect in a different organ. Hormones regulate everything from digestion to water retention to brain function to sexual arousal. Return to previous page.
A naturally occurring substance secreted by specialized cells that affects the metabolism or behavior of other cells possessing functional receptors for the hormone. Hormones may be hydrophilic, like insulin, in which case the receptors are on the cell surface or lipophilic, like the steroids, where the receptor can be intracellular.
receptor test A laboratory test that is done to see if a tumour is affected by certain hormones. Results will be positive or negative, and are referred to as hormone receptor status. Two hormones that affect breast cancer are estrogen and progesterone.
class of chemical substances produced by glands and other body organs that are released into the bloodstream and control various body functions.
A chemical substance produced in one part of the body that starts or runs the activity of another organ or part of the body.
A chemical messenger (e.g., adrenaline, testosterone) involved in the regulation and coordination of cellular and bodily functions. Immunology (adjective Immunologic) The study and/or treatment of disorders that involve the immune system (e.g., cancer, HIV disease, autoimmune diseases).
A hormone is a chemical in plants (and other organisms) that regulates the plant's growth, reproduction, and other functions.
A group of chemicals made by glands in the body. Hormones circulate in the bloodstream and control the actions of certain cells or organs. Some hormones can also be manufactured.
A chemical released into the bloodstream that stimulates or inhibits an action in another body tissue.
A chemical substance that is secreted into body fluids and transported to another organ, where it produces a specific effect on metabolism.
A chemical messenger produced by an organ in one part of the body and transported through the bloodstream to other parts of the body where it has a specific effect on cells that recognize its message. See also endocrine system.
A complex chemical substance produced in one part or organ of the body that sets the pace for the activity of an organ or group of cells in another part of the body.
An organic chemical produced in cells of one part of the body (usually in endocrine gland) that diffuses or is transported by the blood circulation to cells in other parts of the body, where it regulates and coordinates their activities.
An active regulatory chemical substance formed in one part of the body and carried by the blood to another part of the body, where it signals the coordination of cellular functions.
A chemical messenger. Hormones are secreted by a variety of glands in response to altered conditions in the body. The production of hormones such as melatonin, DHEA, and pregnenolone decreases as the body ages.
A chemical messenger released into the bloodstream to deliver instructions to organs and tissues. The corticosteroids are hormones.
A substance excreted in the body that is involved in regulating some bodily functions, such as estrogen and testosterone.
A substance released by glands to stimulate certain activity in the body.
A chemical produced by a gland, which is transported around the body in the bloodstream, and produces an effect in another organ.
( HOR-MOHN ) A MOLECULE OR GROUP OF MOLECULES, THAT CAUSES OTHER MOLECULES, TO COME TO AN ORGAN,TO PRODUCE CHANGES IN THAT ORGANS ACTIVITYS. HEART HOMONES...HELP OUR HEARTS TO ABSORB OMEGA 6 LIPIDS GROWTH HORMONES....CAUSE OUR BONE CELLS TO GROW. HYDROLYZE = ( HAI -DRO-LAI-Z ) TO ADD, EXACTLY THE CORRECT AMOUNT, OF WATER MOLECULES, TO A COMPLEX CARBOHYDRATE, THAT WILL CATALYZE IT TO BREAKDOWN, INTO MORE, SIMPLE SUGARS.
Active substance synthesized by one tissue, transported in blood to another organ where it exerts an action.
A chemical substance produced by one organ in the body that regulates the activity of another organ.
a chemical substance released into the body by the endocrine glands such as the thyroid, adrenal, or ovaries. The substance travels through the bloodstream and sets in motion various body functions. Testosterone and estrogen are examples of male and female hormones.
A substance produced and released by certain parts of the body that can travel through the bloodstream and exert significant effects on other parts of the body (such as growth or changes in metabolism) over extended periods of time.
Chemical substance produced by an endocrine gland.
A substance produced by an endocrine gland that trabelss through the bloodstream to a specific organ.
A hormone (from Greek ÏŒÏμή - "to set in motion") is a chemical messenger from one cell (or group of cells) to another. All multicellular organisms produce hormones (including plants - see phytohormone).