Question 1

Which of the following is more effective in producing bronchodilation?

Accepted Answer

A)  Acetylcholine
B)  Nicotine
C)  Muscarine
D)  Norepinephrine
E)  ThyroxineF) A) and B)
G) C) and E)

Question 2

Which of the following is not under dual control of the ANS?

Accepted Answer

A)  Pupil diameter
B)  Heart rate
C)  Salivary gland activity
D)  Adrenal medulla activity
E)  Gastrointestinal motilityF) A) and D)
G) B) and C)

Question 3

The adrenal medulla is a modified sympathetic ganglion.

Accepted Answer

A) True 
 B)False

Question 4

Autonomic function receives input from all these except __________.

Accepted Answer

A)  spinal cord
B)  cerebral cortex
C)  hypothalamus
D)  medulla oblongata
E)  somatic branch of the peripheral nervous systemF) A) and B)
G) B) and C)

Question 5

Which of the following structures releases neurotransmitter in a paravertebral ganglion?

Accepted Answer

A)  Preganglionic sympathetic fiber
B)  Postganglionic sympathetic fiber
C)  Somatic motor fiber
D)  Preganglionic parasympathetic fiber
E)  Postganglionic parasympathetic fiberF) B) and D)
G) B) and E)

Question 6

Which of the following statements is true regarding parasympathetic tone?

Accepted Answer

A)  It holds the resting heart rate below its intrinsic rate.
B)  It accelerates the resting heart rate above its intrinsic rate.
C)  It might increase or decrease heart rate depending on the situation.
D)  It affects heart rate only after myocardial infarction.
E)  It does not affect heart rate.F) C) and D)
G) B) and D)

Question 7

Propranolol,a beta-blocker,is typically used to __________.

Accepted Answer

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 bronchodilationF) A) and E)
G) All of the above

Question 8

__________ is an example of the cooperative effect between the two autonomic nervous system divisions.

Accepted Answer

A)  Orgasm
B)  Bronchodilation
C)  Gastrointestinal secretion
D)  Heart rate
E)  Vasomotor toneF) B) and E)
G) B) and D)

Question 9

The enzyme that breaks down norepinephrine (NE) is called __________.

Accepted Answer

A)  noradrenalinase
B)  adenosine
C)  monoamine oxidase (MAO) 
D)  norepinephrinase
E)  catchol-O-methyltrasferase (COMT) F) A) and B)
G) D) and E)

Question 10

Under normal circumstances,both divisions of the autonomic nervous system are active simultaneously.

Accepted Answer

A) True 
 B)False

Question 11

Most fibers of the parasympathetic nervous system travel in the __________.

Accepted Answer

A)  vagus
B)  trigeminal
C)  splanchnic
D)  facial
E)  sciaticF) None of the above
G) A) and E)

Question 12

White rami carry _________ neurons,while gray rami carry _________ neurons.

Accepted Answer

A)  myelinated postganglionic; unmyelinated preganglionic
B)  unmyelinated postganglionic; myelinated preganglionic
C)  myelinated preganglionic; unmyelinated postganglionic
D)  unmyelinated preganglionic; myelinated postganglionic
E)  myelinated preganglionic; myelinated postganglionicF) D) and E)
G) A) and E)

Question 13

Atropine is sometimes used to dilate the pupil for an eye examination.Which receptor would atropine block?

Accepted Answer

A)  Alpha 1 adrenergic receptor
B)  Nicotinic receptor
C)  Muscarinic receptor
D)  Alpha 2 adrenergic receptor
E)  Beta receptorF) B) and E)
G) All of the above

Question 14

Which one of the following is made up of primarily adrenergic fibers?

Accepted Answer

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 divisionF) B) and E)
G) B) and D) B

Question 15

In response to high blood pressure,stretch receptors called __________ in the walls of arteries carrying blood to the head,will trigger a reflex that causes the heart to __________ its beats per minute.

Accepted Answer

A)  baroreceptors; decrease
B)  proprioceptors; decrease
C)  baroreceptors; increase
D)  proprioceptors; increase
E)  chemoreceptors; increaseF) A) and B)
G) B) and C)

Question 16

Which of the following structures is not associated with the autonomic nervous system?

Accepted Answer

A)  Preganglionic neuron
B)  Postganglionic neuron
C)  Splanchnic nerve
D)  Oculomotor nerve
E)  Facial nerveF) None of the above
G) A) and D)

Question 17

The binding of __________ to a nicotinic receptor of a muscle fiber will __________ it.

Accepted Answer

A)  acetylcholine; excite
B)  norepinephrine; excite
C)  monoamine oxidase; inhibit
D)  acetylcholine; inhibit
E)  acetylcholinesterase; exciteF) A) and E)
G) All of the above

Question 18

A possible explanation for the effect of caffeine is that it blocks the receptor for a neuromodulator in the brain called __________,which inhibits ACh release by cholinergic neurons.

Accepted Answer

A)  glycine
B)  dopamine
C)  serotonin
D)  melatonin
E)  adenosineF) C) and D)
G) B) and E)

Question 19

The __________ is an especially important center of autonomic control.

Accepted Answer

A)  pons
B)  medulla oblongata
C)  hypothalamus
D)  midbrain
E)  pituitary glandF) A) and B)
G) A) and E) C

Question 20

Which of the following is not a characteristic of the enteric nervous system?

Accepted Answer

A)  Its reflex arcs are associated with the spinal cord.
B)  It does not arise from the spinal cord.
C)  It innervates smooth muscle.
D)  It innervates glands.
E)  It does not arise from the brainstem.F) B) and C)
G) C) and E) A

Exam 15: The Autonomic Nervous System and Visceral Reflexes

Which of the following is more effective in producing bronchodilation?

Correct AnswerverifiedShow Answer

Which of the following is not under dual control of the ANS?

Correct AnswerverifiedShow Answer

The adrenal medulla is a modified sympathetic ganglion.

Correct AnswerverifiedShow Answer

Autonomic function receives input from all these except __________.

Correct AnswerverifiedShow Answer

Which of the following structures releases neurotransmitter in a paravertebral ganglion?

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding parasympathetic tone?

Correct AnswerverifiedShow Answer

Propranolol,a beta-blocker,is typically used to __________.

Correct AnswerverifiedShow Answer

__________ is an example of the cooperative effect between the two autonomic nervous system divisions.

Correct AnswerverifiedShow Answer

The enzyme that breaks down norepinephrine (NE) is called __________.

Correct AnswerverifiedShow Answer

Under normal circumstances,both divisions of the autonomic nervous system are active simultaneously.

Correct AnswerverifiedShow Answer

Most fibers of the parasympathetic nervous system travel in the __________.

Correct AnswerverifiedShow Answer

White rami carry _________ neurons,while gray rami carry _________ neurons.

Correct AnswerverifiedShow Answer

Atropine is sometimes used to dilate the pupil for an eye examination.Which receptor would atropine block?

Correct AnswerverifiedShow Answer

Which one of the following is made up of primarily adrenergic fibers?

Correct AnswerverifiedB

In response to high blood pressure,stretch receptors called __________ in the walls of arteries carrying blood to the head,will trigger a reflex that causes the heart to __________ its beats per minute.

Correct AnswerverifiedShow Answer

Which of the following structures is not associated with the autonomic nervous system?

Correct AnswerverifiedShow Answer

The binding of __________ to a nicotinic receptor of a muscle fiber will __________ it.

Correct AnswerverifiedShow Answer

A possible explanation for the effect of caffeine is that it blocks the receptor for a neuromodulator in the brain called __________,which inhibits ACh release by cholinergic neurons.

Correct AnswerverifiedShow Answer

The __________ is an especially important center of autonomic control.

Correct AnswerverifiedC

Which of the following is not a characteristic of the enteric nervous system?

Correct AnswerverifiedA

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White rami carry _ neurons,while gray rami carry _ neurons.

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B

In response to high blood pressure,stretch receptors called in the walls of arteries carrying blood to the head,will trigger a reflex that causes the heart to its beats per minute.

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The binding of to a nicotinic receptor of a muscle fiber will it.

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C

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A