compounds which include adrenaline, noradrenaline and some of their metabolites. caudal: relating to the posterior part of the body.
Compounds secreted by the adrenal medulla, the most notable of which is epinephrine (adrenaline).
Monoamine compounds, each having a catechol portion. Catecholamines known to be neurotransmitters of the central nervous system are norepinephrine and dopamine; another, epinephrine, is principally a hormone.
The neurotransmitters, dopamine, norepinephrine, and epinephrine ( Ch. 6), comprising amines attached to catechol rings.
Group of compounds derived from tyrosine that function as neurotransmitters; include epinephrine, norepinephrine, and dopamine. ( Figure 21-28)
Epinephrine (adrenaline) and norepinephrine (noradrenaline)
The biologically active amines, epinephrine and norepinephrine, which have a marked effect on the nervous and cardiovascular systems.
Hormonal chemical messengers in the body that send signals to the sinus node to increase the heart rate; one such catecholamine is adrenaline (epinephrine).
kat-ah-KOLE-ah-meens Hormones of the adrenal medulla. 670
Hormones secreted by the adrenal glands, which stimulate the sympathetic part of the autonomic nervous system.
Class of hormones (e.g. epinephrine and norepinephrine) secreted by the adrenal glands.
A family of hormones produced by the human body (see ‘Epinephrine')
Chemicals produced by organs that are controlled by the sympathetic nervous system. These substances are involved in the fight-or-flight response to stress.
The neurotransmitters dopamine, epinephrine and norepinephrine that are active both in the brain and the peripheral sympathetic nervous system. These three molecules have certain structural similarities and are part of a larger class of neurotransmitters known as monoamines.
a group of adrenergic amines that mimic the actions of the sympathetic nervous system.
Neurotransmitters that have a catechol ring (a 3,4-dihyroxylated benzene ring). Examples are dopamine, norepinephrine, and epinephrine.
The hormones epinephrine (adrenaline) and norepinephrine (nonadrenaline), which are released by the sympathetic nervous system and tend to raise the blood pressure.
the class of neurotransmitters that includes norepinephrine and dopamine.
A family of neurotransmitters that have an activating function, including epinephrine, norepinephrine, and dopamine.
Catecholamines are a group of chemical substances, including epinephrine, norepinephrine and dopamine, having various roles (mainly as neurotransmitters) in the functioning of the sympathetic and central nervous systems. Chemically, all contain a benzene ring with adjacent hydroxyl groups and an amine group on a side chain.
substances with a specific chemical structure (a benzene ring with two adjacent hydroxyl groups and a side chain of ethylamine) that function as hormones or neurotransmitters. Examples include epinephrine, norepinephrine, and dopamine.
A group of compounds with active roles in the sympathetic and parasympathetic nervous systems. This group includes adrenalin (epinephrin is another name for the same compound) which is a hormone secreted by the adrenal gland, and noradrenalin (norepinephrin is another name). Effects include blood vessel constriction and increase in blood pressure, and increased heart rate. Catecholamines are converted to dopamine in the body. See Tyrosine.
A class of neurotransmitters or substances released at nerve endings to facilitate transmission of nerve impulses.
a class of brain neurotransmitters (chemicals which serve to carry communications between nerves) which includes norephinephrine and dopamine. Both of these decline with age, particularly dopamine, with consequent decline of functions dependent on these catecholamines. The autoxidation of dopamine results in 6-OH-dopamine, hydrogen peroxide, and free radicals which damage the receptors for dopamine. 6-OH-dopamine autoxidation is suspected as being responsible for the pathetic "burn out" schizophrenic and may be involved in producing Parkinsonism.
Group of hormones, including adrenaline.