ANS Flashcards
enzyme responsible for the immediate
breakdown of acetylcholine when released from the nerve ending;
prevents overstimulation of cholinergic receptor sites
acetylcholinesterase
receptor sites on effectors that respond to
norepinephrine/epinephrine
ADRENERGIC RECEPTORS
adrenergic receptors
that are found in smooth muscles
alpha receptors
portion of the central and peripheral
nervous systems that, with the endocrine system, functions to
maintain internal homeostasis
autonomic nervous system
adrenergic receptors that are found in the heart, lungs, and
vascular smooth muscle
beta receptors
receptor sites on effectors that
respond to acetylcholine
cholinergic receptors
enzyme that breaks down norepinephrine to
make it inactive
monoamine oxidase
cholinergic receptors that also respond to stimulation
by muscarine
muscarin receptors
cholinergic receptors that also respond to stimulation by
nicotine
nicotinic receptors
: “rest-and-digest” response media
parasympathetic nervous sytem
“fight-or-flight” response mediator
sympathetic nervous system
stimulates the adrenergic receptors of the
sympathetic nervous system, either directly (by reacting with receptor sites)
or indirectly (by increasing norepinephrine levels)
adrenergic agonist drug
specifically stimulates the alpha-receptors within the
sympathetic nervous system, causing body responses seen when the
alpha-receptors are stimulated
alpha agonist
relaxation of the muscles in the bronchi, resulting in
a widening of the bronchi; an effect of sympathetic stimulation
bronchodilation
: a drug that lyses, or blocks, the effects of the sympathetic nervous
system
sympatholytic drug
responding to acetylcholine; refers to receptor sites
stimulated by acetylcholine, as well as neurons that release acetylcholine
cholinergic agonist
