a hormone secreted by the adrenal medulla that acts as a powerful stimulant in reponse to fear or stress; it stimulates autonomic nerve action. It can be obtained as a crystalline substance, C9H13NO3. It is used in medicine as a vasoconstrictor (hemostatic) and cardiac stimulant, also to reduce allergic reactions and to stimulate the heart in cases of cardiac arrest.
A hormone secreted by the adrenal glands; it acts to increase blood sugar levels and blood pressure and to accelerate the heart rate.
A hormone secreted from the adrenal glands (which sit atop the kidneys) in moments of crisis. It stimulates the heart to beat faster and work harder, increases the flow of blood to the muscles, causes an increased alertness of mind, and produces other changes to prepare the body to meet an emergency. Adrenaline also acts as a chemical messenger in the brain to transmit signals between nerve cells.
Hormone released by chromaffin cells (in the adrenal gland) and by some neurons in response to stress. Produces "fight or flight" responses, including increased heart rate and blood sugar levels.
(epinephrine) a stress chemical from the adrenal gland that increases heart rate and blood pressure
(ah DREEN ah lin or ah DREN ah lin): The "fight or flight" hormone. Released by the adrenal glands when the body is in physical or emotional distress.
An important hormone that is used to prepare the body for emergency situations, e.g., by increasing the heart rate. It has widespread effects on circulation, muscles and the provision of energy.
Also known as epinephrine. Hormone secreted in the adrenal gland that raises blood pressure, produces a rapid heartbeat and acts a neurotransmitter when the body is subjected to stress or danger.
or Epinephrine epinephrine (èp´e-nèf¹rîn) or adrenaline (e-drèn¹e-lîn), hormone secreted by the medulla of the ADRENAL GLANDS. Strong emotions, such as fear and anger, cause epinephrine to be released into the bloodstream, producing an increase in heart rate, muscle strength, blood pressure, and sugar metabolism. This reaction, often called the "fight or flight" response, prepares the body for strenuous activity. In medicine, epinephrine is used chiefly as a stimulant in cardiac arrest, as a vasoconstrictor in shock, and as a bronchodilator and antispasmodic in bronchial asthma. See also CATECHOLAMINE. Aldosterone
a hormone which is released by the adrenal medulla and acts on the alpha and beta adrenergic receptors. Adrenaline makes the heart beat faster. It also makes the bronchi open and reduces the flow of the blood to the arms and legs. It is also known as epinephrine.
A hormone that prepares the body for danger or stress.
An alternative term for epinephrine.
A hormone secreted by the adrenal medulla that is released into the bloodstream in response to physical or mental stress, as from fear or injury. It initiates many bodily responses, including the stimulation of heart action and an increase in blood pressure, metabolic rate, and blood glucose concentration.
Another name for epinephrine.
hormone secreted by the adrenal medulla at times of extreme emotion. Causes blood sugar levels and blood pressure to rise, thereby effecting circulation and muscle activity. Also called epinephrine.
A natural substance in the body that increases the heart rate, narrows blood vessels and opens up air passages. Used to treat anaphylaxis.
Hormone secreted by the adrenal glands that produces the "fight or flight" response. Also called epinephrine.
a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
Also called EPINEPHRINE, this is the "fight or flight hormone", accelerating the heartbeat, suppressing appetite, increasing alertness, creating excitement, anxiety, or fear depending on the cognitive mood. It also accelerates the breakdown of proteins in the body. Stimulants such as caffeine, nicotine from cigarettes, chili peppers, cocaine, etc. all raise adrenaline levels. Too much stimulation tends to exhaust adrenaline levels. The adrenaline-noradrenaline system works in tandem with thyroid hormone to control heart rate, blood pressure, subjective energy levels, and so on.
the neurotransmitter also known as epinephrine, released by the adrenal glands to activate bodily systems as part of the fight-flight response.
A drug used to treat anaphylaxis. (It is very similar to the hormone called adrenaline that is produced naturally in our bodies and is responsible for feelings of excitement and stimulation.)
Also known as "epinephrine". A drug given to counter anaphylactic shock and severe asthma attacks. Also used during ALS
This was the first naturally produced hormone to be isolated it a pure state. It is known as epinephrine, but its chemical name is 1-[3,4-dihydroxyphenol]-2-methylaminoethanol. Its main action is to raise blood pressure, producing a faster pulse rate.
epinephrine; a hormone produced by the adrenal glands. Adrenaline causes quickening of the heartbeat and raised blood pressure, among other effects.
British name for epinephrine.
one of two chemicals (the other is norepinephrine) released by the adrenal gland that increases the speed and force of heart beats. It dilates the airways to improve breathing and narrows blood vessels in the skin and intestine so that an increased flow of blood reaches the muscles and allows them to cope with the demands of exercise.
hormone secreted by the adrenal medulla that causes quickening of heart beat, strengthens force of the heart's contraction, opens airways in the lungs and numerous other effects; part of fight-or-flight reaction; same as epinephrine
A substance produced by the medulla (inside) of the adrenal gland, adrenaline (the official name in the British Pharmacopoeia) is synonymous with epinephrine. Technically speaking, adrenaline is a sympathomimetic catecholamine. It causes quickening of the heart beat, strengthens the force of the heart's contraction, opens up the bronchioles in the lungs and has numerous other effects. The secretion of adrenaline by the adrenal is part of the "fight-or-flight" reaction that we have in response to being frightened.
One of the chemical messengers in the body that causes the heart to beat faster.
a hormone produced by the cortex of the adrenal gland, particularly during intense emotional states such as fear and rage. Adrenaline increases the heart rate, relaxes bronchial and intestinal smooth muscle, and increases certain metabolic processes. Adrenaline is used to treat acute allergic reactions and asthma.
A substance released into the bloodstream by the adrenal glands that cause the heart to beat faster.
also called epinephrine; hormone secreted by the adrenal glands and having the effect of increasing blood pressure and level of blood glucose. Its release is triggered by stress and it prepares the body for ‘fight or flight' response.
A hormone produced by the adrenal glands when a person is exercising, is under stress or feels fear about something. Adrenaline increases the rate of the heartbeat, speeds up the rate of breathing, reducing the blood supply to the intestines so that more blood can flow to the muscles, so that the body is prepared to cope with extra physical or mental effort.
A hormone made by the adrenal glands when a person does exercise, is under stress, or is scared about something. Adrenaline makes the heart beat faster, speeds up breathing, lowers the amount of blood going to the intestines so that more blood can flow to the muscles. This helps the body cope with extra physical or mental work.
A drug that relaxes muscles the muscles surrounding the bronchial tubes in asthma;also called epinephrine.
a hormone that causes a rapid increase in heart rate.
An important hormone in the body; also known as epinephrine. It prepares the body for emergencies by raising blood pressure, making breathing easier, speeding the heart rate, and increasing blood sugar.
A hormone. Also called epinephrine.
A hormone released by the adrenal glands that stimulated the heart and dilates the arteries. It is also referred to as epinephrine.
An important hormone secreted by the body, which is involved in the 'fright, flight or fight' reaction. Its effect is to prepare the body for action e.g. by increasing the heart rate and constricting certain blood vessels to redirect blood to the muscles where it is needed most. Can be given to patients by injection to stimulate the heart and improve breathing in emergency situations.
The hormone secreted by the central part (medulla) of the adrenal gland. More about this.
A hormone of the adrenal glands, also known as epinephrine; stimulates the sympathetic nervous system to prepare for fight-or-flight.
The neurotransmitter of the adrenal gland which is secreted in moments of crisis. It stimulates the heart to beat faster and work harder, increases the flow of blood to the muscles, causes an increased alertness of mind, and produces other changes to prepare the body to meet an emergency.
A hormone secreted by the adrenal gland into the circulatory system which stimulates the heart, blood vessels and respiratory system.
also known as epinephrine. A hormone secreted by the adrenal gland during stressful situations. Adrenaline stimulates the heart and nervous system, preparing the body for action. Muscles contract, blood pressure and heart beat increase, and the immune and digestive systems shutdown.
a hormone secreted by the adrenal medulla: it is a stimulant and prepares the body for “fight” or “flight.
Adrenaline is a hormone produced at times of stress that affects heart rate, blood circulation and other functions of the body.
Hormone that affects heart and circulation, metabolism and smooth muscles.
Synonym for epinephrine ( Ch. 10).
Epinephrine. One of several hormones produced by the adrenal glands.
A molecule that acts as both a hormone and neurotransmitter. Adrenaline is synthesized during times of stress and produces various effects that include increased heart rate, sweating, and increased metabolism. Also referred to as epinephrine.