Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which of the following is most related to the
“feed-and-breed” system?
a. | Pyramidal tracts | b. | Sympathetic nervous system | c. | Craniosacral outflow | d. | Rapid heart rate,
palpitations, sweating |
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2.
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Which neurotransmitter is secreted by a cholinergic
fiber?
a. | Adrenaline | b. | Epinephrine | c. | Acetylcholine | d. | Norepinephrine |
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3.
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Which of the following is not an effector organ for
the autonomic nerves?
a. | Skeletal muscle | b. | Visceral smooth muscle | c. | Glands | d. | Cardiac
muscle |
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4.
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Which of the following is characteristic of the
sympathetic nervous system?
a. | Craniosacral outflow | b. | Cholinergic fibers only | c. | Paravertebral
ganglia | d. | Postganglionic transmitter is
ACh |
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5.
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The effects of adrenal medullary secretion most
resemble
a. | craniosacral outflow. | b. | firing of the somatic motor neurons. | c. | sympathetic nerve discharge. | d. | vagal discharge. |
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6.
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An adrenergic fiber is one that
a. | innervates the adrenal
medulla. | b. | is a preganglionic fiber. | c. | originates in the midbrain. | d. | secretes norepinephrine as its
transmitter. |
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7.
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Which of the following is an adrenergic
fiber?
a. | Postganglionic
parasympathetic | b. | Preganglionic
sympathetic | c. | Preganglionic
parasympathetic | d. | Postganglionic
sympathetic |
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8.
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Sympathetic and parasympathetic
nerves
a. | are somatic motor neurons. | b. | supply voluntary skeletal muscles. | c. | include the phrenic, sciatic, and brachial nerves. | d. | innervate the viscera. |
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9.
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A drug that causes the heart to beat stronger and
faster is called a(n)
a. | parasympatholytic. | b. | sympathomimetic. | c. | sympatholytic. | d. | anticholinergic. |
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10.
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Which of the following is an effect of
postganglionic parasympathetic discharge?
a. | Slowed heart rate | b. | Increased blood pressure | c. | Dilation of the
pupil of the eye | d. | Stronger
contraction of the heart |
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11.
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Vasomotor tone is
a. | a vasoconstrictor effect caused by background firing of
the sympathetic nerves. | b. | a vagally induced
peripheral vasodilation. | c. | caused by
parasympathomimetic drugs. | d. | caused by
sympatholytic drugs. |
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12.
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Paravertebral ganglia
a. | are part of the craniosacral
outflow. | b. | “drive” the vagus
nerve. | c. | are located within the organs of
innervation. | d. | are also called
the sympathetic chain ganglia. |
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13.
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Alpha and beta receptors are
a. | associated with the parasympathetic nervous
system. | b. | associated with craniosacral
outflow. | c. | located on the paravertebral
ganglia. | d. | activated by
norepinephrine. |
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14.
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Which of the following is least associated with
monoamine oxidase (MAO)?
a. | Enzyme that degrades
norepinephrine | b. | Found within all
cholinergic nerve terminals | c. | Associated with
sympathetic activity | d. | Associated with
adrenergic fibers |
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15.
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A beta1-adrenergic agonist
a. | increases heart rate. | b. | causes the release of acetylcholine. | c. | blocks the effects of norepinephrine at its receptor
site. | d. | lowers blood
pressure. |
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16.
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Atropine is classified as a muscarinic antagonist
or blocker and therefore is a
a. | parasympathomimetic. | b. | sympatholytic. | c. | vagolytic. | d. | sympathomimetic. |
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17.
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Muscarinic receptors are
a. | activated by norepinephrine. | b. | located on the effector organs of the sympathetic nervous
system. | c. | activated by catecholamines such as adrenalin and
dopamine. | d. | activated by ACh. |
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18.
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Which of the following is least true of the vagus
nerve?
a. | Cholinergic | b. | Slows heart rate | c. | Effect on the
heart is eliminated by a beta1-adrenergic blocker | d. | Transmitter is ACh |
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19.
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Vagal discharge activates
a. | muscarinic receptors. | b. | alpha1-adrenergic receptors. | c. | beta1-adrenergic receptors. | d. | the paravertebral ganglia. |
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20.
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Sympathetic nervous system stimulation causes
vasoconstriction of the blood vessels, thereby elevating blood pressure. Which of the following drug
classifications lowers blood pressure?
a. | Vagolytic | b. | Sympatholytic | c. | Parasympathomimetic | d. | Vagomimetic |
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21.
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Sympathetic nerve stimulation causes relaxation of
the breathing passages (bronchodilation). Which of the following drug classifications achieves this
effect?
a. | Beta2-adrenergic
agonist | b. | Alpha1-adrenergic
blocker | c. | Vagomimetic | d. | Parasympathomimetic |
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22.
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A preoperative patient received an antimuscarinic
drug (atropine). Which drug-related postoperative consequence is this patient likely to
experience?
a. | Decreased heart rate | b. | Difficult urination | c. | Elevated blood
pressure | d. | Excess salivation |
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23.
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A patient has vagally induced bradycardia (slow
heart rate). Which of the following will relieve the bradycardia?
a. | Muscarinic antagonist | b. | Beta1-adrenergic blocker | c. | Vagomimetic | d. | Alpha1-adrenergic agonist |
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24.
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Which of the following is most descriptive of dual
innervation of the autonomic nervous system?
a. | Muscarinic and nicotinic | b. | Alpha and beta | c. | Sympathetic and
parasympathetic | d. | Beta1
and beta2 |
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25.
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Which group is incorrect?
a. | Adrenergic receptors: alpha,
beta | b. | Cholinergic receptors: muscarinic,
nicotinic | c. | Neurotransmitters: norepinephrine, ACh,
dopamine | d. | Sympathetic responses: decreased blood pressure,
decreased heart rate, anxiety |
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