Ch. 16 Quiz Flashcards
Which of the following is not controlled by the autonomic nervous system?
a. The adrenal gland
b. The smooth muscle in the walls of the aorta
c. The cardiac muscle in the right atrium
d. The skeletal muscle in the rectus abdominis
e. The parotid salivary gland
d. The skeletal muscle in the rectus abdominis
Which of the following symptoms may be from an increase in parasympathetic tone?
a. Increased heart rate
b. Twitching skeletal muscles
c. Decrease in intestinal motility
d. Excessive salivation
e. Dilated pupils
d. Excessive salivation
The motor nervous system that secretes acetylcholine and norepinephrine is the __________ nervous system while the division that secretes only acetylcholine is the __________ nervous system.
a. autonomic; somatic
b. somatic; autonomic
c. afferent; efferent
d. efferent; afferent
a. autonomic; somatic
Sympathetic fibers arise only from the ___________ region(s) of the spinal cord.
a. cervical, thoracic, and lumbar
b. thoracic and lumbar
c. thoracic
d. cervical
e. lumbar
b. thoracic and lumbar
Which of the following is not a feature of the sympathetic division of the autonomic nervous system?
a. The sympathetic division originates in the thoracolumbar region of the spinal cord.
b. The sympathetic division has long postganglionic fibers.
c. The sympathetic division has long preganglionic fibers.
d. The sympathetic division’s ganglia are adjacent to the spinal column.
e. The sympathetic division has an extensive neural divergence and a relative widespread effect.
c. The sympathetic division has long preganglionic fibers.
Which of the following cranial nerves does not carry parasympathetic fibers?
a. Vagus
b. Facial
c. Oculomotor
d. Glossopharyngeal
e. Hypoglossal
e. Hypoglossal
Which of the following cranial nerves carries sympathetic fibers?
a. Oculomotor
b. Facial
c. Trigeminal
d. Vagus
e. None of the cranial nerves carry sympathetic fibers.
e. None of the cranial nerves carry sympathetic fibers.
Propranolol is a beta-blocker. Which of the following would be one of its effects?
a. Increase heart rate
b. Decrease heart rate
c. Produce vasoconstriction of the coronary arteries
d. Produce vasodilation of blood vessels of skeletal muscle
e. Produce bronchodilation
b. Decrease heart rate
Which of the following is most effective in producing bronchodilation?
a. Acetylcholine
b. Nicotine
c. Muscarine
d. Norepinephrine
e. Thyroxine
d. Norepinephrine
Muscarinic receptors bind __________.
a. epinephrine
b. norepinephrine
c. monoamine oxidase (MAO)
d. acetylcholinesterase
e. acetylcholine
e. acetylcholine
Which one of the following is made up of primarily adrenergic fibers?
a. Preganglionic neurons of the sympathetic division
b. Postganglionic neurons of the sympathetic division
c. Postganglionic neurons of the parasympathetic division
d. All motor fibers of the somatic motor system
e. Preganglionic neurons of parasympathetic division
b. Postganglionic neurons of the sympathetic division
Which of the following structures does not arise from the neural crest?
a. The sympathetic chain ganglia
b. The celiac ganglion
c. The parasympathetic preganglionic neurons
d. The parasympathetic postganglionic neurons
e. The adrenal medulla
c. The parasympathetic preganglionic neurons
The embryonic tissue that gives rise to all autonomic ganglia and postganglionic neurons, but not to any preganglionic neurons, is the __________ __________.
Neural crest
Autonomic nervous system function declines with age and will result in all of the following except __________.
a. dry eyes
b. increased constipation
c. poorer night vision
d. increased heart rate
d. increased heart rate
The absence of enteric ganglia in the sigmoid colon and rectum may lead to __________.
a. orthostatic hypotension
b. Chagas disease
c. megacolon
d. mass reflex reaction
c. megacolon
