3/7/24, 8:35 AM
Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
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Quiz: Autonomic Physiology
Due Feb 25 at 11:59pm
Points 50
Questions 20
Time Limit 40 Minutes
Instructions
Attempt History
Attempt Time Score
LATEST Attempt 1 23 minutes 45 out of 50
Correct answers are hidden.
Score for this quiz: 45 out of 50
Submitted Feb 22 at 8:05am
This attempt took 23 minutes.
Question 1
2.5 / 2.5 pts
a. It is a voluntary control system
b. Each pathways consists of 2 neurons (preganglionic and postganglionic)
c. The cell body of the motor neuron is located in the CNS
d. The neurotransmitter acetylcholine (ACh) is released from presynaptic terminals of the motoneurons and
activates nicotinic receptors located on the motor end plates of the skeletal muscle
The quiz:
Covers the Learn material from Module 2: Week 2.
Contains 20 multiple-choice and multiple answerquestions.
Is limited to 40 minutes.
Allows 1 attempt.
Is worth 50 points.
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 2: Week 2.
Which of these is not true about the somatic motor nervous system?
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Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
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IncorrectQuestion 2
0 / 2.5 pts
a. CN III
b. CN X
c. CN IX
d. None of these
Question 3
2.5 / 2.5 pts
a. Epinephrine
b. Norepinephrine
c. Acetylcholine
d. Serotonin
Question 4
2.5 / 2.5 pts
a. Epinephrine is not as widely used in the nervous system as norepinephrine
b. Phenylethanolamine-N-methyltransferase (PNMT) which converts norepinephrine to epinephrine is present
in the adrenal medulla, but not in sympathetic postganglionic adrenergic neurons
c. Acetylcholine which stimulates the secretion of epinephrine does not act on postganglionic neurons
d. Dopamine beta hydroxylase in hyperactive in the adrenal medulla
Question 5
2.5 / 2.5 pts
Which of these cranial nerve nuclei is a component of the sympathetic nervous system?
The neurotransmitter most commonly utilized in preganglionic neuronal communication by the
sympathetic nervous system is ______?
The sympathetic postganglionic neurons release only norepinephrine while the adrenal medulla
secretes mainly epinephrine (80%) and a small amount of norepinephrine (20%). The
sympathetic postganglionic neurons do not secrete epinephrine because;
A 48-year-old woman visits her physician complaining of what she calls “panic attacks.” She
reports that she has experienced a racing heart and that she can feel (and even see) her heart
pounding in her chest. She also complains of throbbing headaches, cold hands and cold feet,
feeling hot, visual disturbances, and nausea and vomiting. In the physician's oce, her blood
https://canvas.liberty.edu/courses/585957/quizzes/2858865
pressure is severely elevated (230/125). She is admitted to the hospital for evaluation of her
3/7/24, 8:35 AM
Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
https://canvas.liberty.edu/courses/585957/quizzes/2858865
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A. Neuroglioma
B. Pheochromocytoma
C. Phenoxybenzamine
D. Glucagonoma
Question 6
2.5 / 2.5 pts
a. Clonidine – Alpha 2 antagonist
b. Isoproterenol – Alpha 1 agonist
c. Prazosin – Beta 1 antagonist
d. Metoprolol – Beta 1 antagonist
Question 7
2.5 / 2.5 pts
a. Atropine
b. Curare
c. Hexamethonium
d. Muscarine
Question 8
2.5 / 2.5 pts
a. increased heart rate
b. contraction of gastrointestinal sphincters
c. contraction of vascular smooth muscle
d. dilation of airways and relaxation of bladder wall
hypertension. A 24-hour urine sample reveals elevated levels of metanephrine,
normetanephrine, and 3-methoxy-4-hydroxymandelic acid (VMA). After the physician rules out
other causes for hypertension, he concludes that she has a tumor of the adrenal medulla,
called______?
Which of these drugs that acts on the sympathetic nervous system is correctly paired to its
mechanism of action?
Which of these drugs blocks the ganglionic nicotinic receptor type 2 (N2) in the entire
autonomic nervous system?
Which of the following actions is/are mediated by β2 receptors:
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Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
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Question 9
2.5 / 2.5 pts
a. Muscarinic : Sphincter
b. Muscarinic : Ciliary
c. Alpha Adrenergic : Sphincter
d. Beta 1 adrenergic : Ciliary
Question 10
2.5 / 2.5 pts
a. ganglia in or near target tissues
b. nicotinic receptors on preganglionic neurons
c. β1 receptors on some target tissues
d. cholinergic postganglionic neurons
Question 11
2.5 / 2.5 pts
a. Inhibits ; β1 receptors
b. Stimulates ; β2 receptors
c. Inhibits ; β2 receptors
d. None of these is correct
Question 12
2.5 / 2.5 pts
a. effect of parasympathetic nervous system to increase gastric acid secretion
b. effect of epinephrine to increase cardiac contractility
A woman who is taking atropine for a gastrointestinal disorder notices that her pupils are
dilated. This has occurred because atropine blocks ___________ receptors on the
__________muscle of the iris.
Which of the following is/are characteristic(s) of the parasympathetic nervous system, but not
of the sympathetic nervous system:
Propranolol causes a decrease in heart rate because it _______________ the _____________
receptors in the sinoatrial node of the heart.
Which of the following actions is/are mediated by the adenylyl cyclase mechanism:
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Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
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c. effect of acetylcholine to decrease heart rate
d. effect of acetylcholine to constrict airways
e. constriction of vascular smooth muscle in splanchnic blood vessels
Question 13
2.5 / 2.5 pts
a. Slowing of conduction velocity in AV node
b. gastric acid secretion
c. mydriasis
d. contraction of gastrointestinal sphincters
e. erection
f. renin secretion
g. sweating on a hot day
Question 14
2.5 / 2.5 pts
a. Increased AV node conduction velocity
b. Increased gastric acidity
c. Pupillary constriction
d. Sustained erection
e. Increased sweating
Question 15
2.5 / 2.5 pts
a. Increasing cyclic adenosine monophosphate (cAMP)
Which of the following actions are mediated by muscarinic receptors?
Patients are enrolled in trials of a new atropine analogue. Which of the following would be
expected?
A 42-year-old woman with elevated blood pressure, visual disturbances, and vomiting has
increased urinary excretion of 3-methoxy-4-hydroxymandelic acid (VMA). A computerized
tomographic scan shows an adrenal mass that is consistent with a diagnosis of
pheochromocytoma. While awaiting surgery to remove the tumor, she is treated with
phenoxybenzamine to lower her blood pressure. What is the mechanism of this action of the
drug?
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Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
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b. Decreasing cAMP
c. Increasing inositol 1,4,5-triphosphate (IP3)/Ca2+
d. Decreasing IP3/Ca2+ (E) Opening Na+/K+ channels
e. Closing Na+/K+ channels
Question 16
2.5 / 2.5 pts
a. Adrenergic α1 receptors
b. Adrenergic β1 receptors
c. Adrenergic β2 receptors
d. Cholinergic muscarinic receptors
e. Cholinergic nicotinic receptors
Question 17
2.5 / 2.5 pts
a. Adrenergic α1 receptors
b. Adrenergic β1 receptors
c. Adrenergic β2 receptors
d. Cholinergic muscarinic receptors
e. Cholinergic nicotinic receptors
IncorrectQuestion 18
0 / 2.5 pts
a. Dilation of bronchiolar smooth muscle
b. Miosis
c. Ejaculation
d. Constriction of gastrointestinal (GI) sphincters
e. Increased cardiac contractility
Which autonomic receptor is activated by low concentrations of epinephrine released from the
adrenal medulla and causes vasodilation?
Which autonomic receptor mediates secretion of epinephrine by the adrenal medulla?
Which of the following responses is mediated by parasympathetic muscarinic receptors?
3/7/24, 8:35 AM
Quiz: Autonomic Physiology: MSCI520: Principles of Physiology I (C01)
https://canvas.liberty.edu/courses/585957/quizzes/2858865
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Question 19
2.5 / 2.5 pts
a. Ganglia located in the effector organs
b. Long preganglionic neurons
c. Preganglionic neurons release norepinephrine
d. Preganglionic neurons release acetylcholine (ACh)
e. Preganglionic neurons originate in the thoracolumbar spinal cord
f. Postganglionic neurons synapse on effector organs
g. Postganglionic neurons release epinephrine
h. Postganglionic neurons release ACh
Question 20
2.5 / 2.5 pts
a. α1 Receptors
b. α2 Receptors
c. β1 Receptors
d. β2 Receptors
e. Muscarinic receptors
f. Nicotinic receptors
Quiz Score: 45 out of 50
Which of the following is a feature of the sympathetic, but not the parasympathetic nervous
system?
Which adrenergic receptor produces its stimulatory effects by the formation of inositol 1,4,5-
triphosphate (IP3) and an increase in intracellular [Ca2+]?
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