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PNB 2264 Exam 4 with Questions Solved 100% Correct
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PNB 2264 Exam 4 with Questions Solved 100% Correct
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PNB 2264 Exam 4 with Questions Solved100% Correct
postganglionic neuron of sympathetic NS and adrenal chromaffin cells - ANSWER
adrenergic found in
all preganglionic cells and postganglionic neurons of parasympathetic NS - ANSWER
cholinergic found in
nicotinic and muscarinic - ANSWER acetylcholine receptors:
acetylcholine, muscarine - ANSWER muscarinic agonist
target organs (parasympathetic only) - ANSWER muscarinic receptors are on
acetylcholine, nicotine - ANSWER nicotinic agaonist
post ganglionic neurons of both divisions - ANSWER nicotonic receptors are located on
nicotinic - ANSWER which acetylcholine receptor is iontropic (when NT binds, ion
channel opens and allows ions to come inside)
muscarinic - ANSWER which acetylcholine receptor is metabotropic (g protein-
activate signaling enzymes inside the cell- not ion channel- parasympathetic)
epinephrine (contraction or dilatory effect on smooth muscle) - ANSWER fight or
flight response is mediated by what hormone
,the receptor - ANSWER how a tissue responds to a NT depends on
alpha 1 - ANSWER peripheral blood vessels are controlled by ___ adrenergic receptors
alpha 2 - ANSWER brain, GI organs are controlled by ___ adrenergic receptors
beta 1 - ANSWER cardiac muscles are controlled by ___ adrenergic receptors
beta 2 - ANSWER BV of heart, lungs, skeletal muscle are controlled by ___
adrenergic receptors
adrenergic - ANSWER receptors for epinephrine
no - ANSWER will blocking nicotinic receptors impair firing of AP in
preganglionic neurons
yes - ANSWER will blocking nicotinic receptors impair release of epinephrine from post
ganglionic neurons in the sympathetic NS?
yes - ANSWER will blocking nicotinic receptors impair release of epinephrine from
adrenal medulla
yes - ANSWER will blocking nicotinic receptors impair voluntary contraction of biceps?
true - ANSWER most organs are innervated by sympathetic and parasympathetic
antagonistic control - ANSWER if you stimulate one side, contraction. Stimulate other
side, inhibition. two receptors (nicotinic and muscarinic) work against each other
, autonomic nervous system - ANSWER efferent innervation of tissue other than skeletal
muscle
somatic - ANSWER part of nervous system under voluntary control (alpha
motor neurons- skeletal)
autonomic - ANSWER part of nervous system under involuntary control (smooth
muscle), also controls secretion (endocrine)
reflexes are involuntary from skeletal muscle - ANSWER gray area
of somatic/autonomic
visceral motor neurons, target organs - ANSWER ANS consists of
cardiac muscle, smooth muscle, adipocytes, glands - ANSWER target organs of ANS
long, excitatory at skeletal muscles NMJ- enough graded potential to contract,
myelinated - ANSWER somatic motor pathway
pre and post ganglionic neurons communicate with each other at synapse
(ganglion), postganglionic brings info to smooth or cardiac muscles, glands, or GI
neurons, don't need to be myelinated - ANSWER visceral neurons
come out of ventral root - ANSWER somatic and visceral neurons both
sympathetic and parasympathetic - ANSWER divisions of ANS
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