epinephrine

As a noun epinephrine

is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between epinephrine and ephedrine

is that epinephrine is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine while ephedrine is ephedrine.

As nouns the difference between epinephrine and phenylephrine

is that epinephrine is a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine while phenylephrine is an α-adrenergic receptor agonist; 3-(1-hydroxy-2-methylamino-ethyl)phenol, with the formula C₉H₁₃NO₂.

As nouns the difference between epinephrine and atropine

is that epinephrine is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine while atropine is (poison|pharmaceutical drug) an alkaloid extracted from the plant deadly nightshade (atropa belladonna ) and other sources though overdoses would be fatal it is used as a drug in medicine for its paralytic effects (eg in surgery to relax muscles, in dentistry to dry the mouth, in ophthalmology to dilate the pupils).

As nouns the difference between dopamine and epinephrine

is that dopamine is (label) a neurotransmitter associated with movement, attention, learning, and the brain’s pleasure and reward system while epinephrine is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine.

As nouns the difference between taxonomy and epinephrine

is that taxonomy is the science or the technique used to make a classification while epinephrine is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine.

As nouns the difference between epinephrine and epi

is that epinephrine is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine while epi is a syringe or autoinjector filled with epinephrine, most frequently used for the treatment of acute allergic reactions to avoid or treat the onset of anaphylactic shock or epi can be (category theory) abbreviated form of epimorphism.

As nouns the difference between epinephrine and tetrahydrobiopterin

is that epinephrine is (hormone|neurotransmitter|organic compound) a catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine while tetrahydrobiopterin is (biochemistry) a naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.