Question 1

Fibers of the vagus nerve end very near or within their target organs.

Accepted Answer

A) True 
 B)False

Question 2

The __________ is an especially important center of autonomic control.

Accepted Answer

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

Question 3

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

Accepted Answer

A)   vagus
B)   trigeminal
C)   splanchnic
D)   facial
E)   sciaticF) A) and E)
G) B) and E)

Question 4

Which of the following structures releases neurotransmitter molecules 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) A) and C)
G) B) and C)

Question 5

The sympathetic chain of ganglia is found at the __________ levels of the spinal cord.

Accepted Answer

A)   cervical and thoracic
B)   thoracic and lumbar
C)   thoracic,lumbar and sacral
D)   sacral,lumbar and coccygeal
E)   cervical,thoracic,lumbar,sacral,and coccygealF) B) and D)
G) B) and C)

Question 6

Which one of the following best describes the order of a visceral reflex?

Accepted Answer

A)   Sensory receptor → interneuron → afferent nerve fiber → efferent nerve fiber → gland
B)   Sensory receptor → efferent nerve fiber → interneuron → afferent nerve fiber → gland
C)   Sensory receptor → afferent nerve fiber → interneuron → efferent nerve fiber → gland
D)   Sensory receptor → efferent nerve fiber → afferent nerve fiber → interneuron → gland
E)   Sensory receptor → interneuron → efferent nerve fiber → afferent nerve fiber → glandF) None of the above
G) A) and E)

Question 7

The autonomic nervous system carries out many somatic reflexes that are crucial to homeostasis.

Accepted Answer

A) True 
 B)False

Question 8

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) A) and B)
G) A) and D)

Question 9

Which of the following is more effective in producing bronchodilation?

Accepted Answer

A)   Acetylcholine
B)   Nicotine
C)   Muscarine
D)   Norepinephrine
E)   ThyroxineF) B) and D)
G) None of the above

Question 10

Autonomic nervous system fibers are involved in all of the following except __________.

Accepted Answer

A)   changing the diameter of the pupil
B)   adjusting heart rate and force
C)   altering salivary mucus secretion
D)   regulating gastrointestinal motility
E)   maintaining tonicity of the muscles of the neckF) A) and E)
G) D) and E) E

Question 11

Muscarinic receptors bind __________.

Accepted Answer

A)   epinephrine
B)   norepinephrine
C)   monoamine oxidase (MAO) 
D)   acetylcholinesterase
E)   acetylcholineF) A) and D)
G) A) and C)

Question 12

Binding of norepinephrine (NE)to an alpha-adrenergic receptor is usually excitatory,and binding to a beta-adrenergic receptor is usually inhibitory.

Accepted Answer

A) True 
 B)False

Question 13

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) None of the above
G) D) and E)

Question 14

A neuron that synapses in the adrenal medulla is a ___________ neuron,and releases the neurotransmitter ___________.

Accepted Answer

A)   preganglionic;acetylcholine (ACh) 
B)   postganglionic;norepinephrine (N
E)  
C)   preganglionic;norepinephrine (N
E)  
D)   postganglionic;acetylcholine (ACh) 
E)   somatic;norepinephrine (N
E)  F) D) and E)
G) A) and B)

Question 15

Acetylcholine (ACh)binds to both muscarinic and nicotinic receptors.

Accepted Answer

A) True 
 B)False

Question 16

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) None of the above
G) A) and B)

Question 17

Damage to the __________ may affect near vision accommodation.

Accepted Answer

A)   celiac ganglion
B)   oculomotor nerve (CN III) 
C)   facial nerve (CN VII) 
D)   glossopharyngeal nerve (CN IX) 
E)   cardiac plexusF) C) and D)
G) C) and E)

Question 18

The adrenal medulla secretes mostly ___________.

Accepted Answer

A)   norepinephrine (noradrenaline) 
B)   dopamine
C)   endorphins
D)   acetylcholine (ACh) 
E)   epinephrine (adrenaline) F) A) and D)
G) C) and E) E

Question 19

The effect of autonomic fibers on target cells is _________.The effect of somatic fibers on target cells is __________.

Accepted Answer

A)   always excitatory;always excitatory
B)   excitatory or inhibitory;always excitatory
C)   excitatory or inhibitory;excitatory or inhibitory
D)   always inhibitory;excitatory or inhibitory
E)   always inhibitory;always excitatoryF) A) and C)
G) B) and E) B

Question 20

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) B) and D)
G) C) and D)

Exam 15: The Autonomic Nervous System and Visceral Reflexes

Fibers of the vagus nerve end very near or within their target organs.

Correct AnswerverifiedShow Answer

The __________ is an especially important center of autonomic control.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The sympathetic chain of ganglia is found at the __________ levels of the spinal cord.

Correct AnswerverifiedShow Answer

Which one of the following best describes the order of a visceral reflex?

Correct AnswerverifiedShow Answer

The autonomic nervous system carries out many somatic reflexes that are crucial to homeostasis.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is more effective in producing bronchodilation?

Correct AnswerverifiedShow Answer

Autonomic nervous system fibers are involved in all of the following except __________.

Correct AnswerverifiedE

Muscarinic receptors bind __________.

Correct AnswerverifiedShow Answer

Binding of norepinephrine (NE)to an alpha-adrenergic receptor is usually excitatory,and binding to a beta-adrenergic receptor is usually inhibitory.

Correct AnswerverifiedShow Answer

Autonomic function receives input from all these except __________.

Correct AnswerverifiedShow Answer

A neuron that synapses in the adrenal medulla is a ___________ neuron,and releases the neurotransmitter ___________.

Correct AnswerverifiedShow Answer

Acetylcholine (ACh)binds to both muscarinic and nicotinic receptors.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Damage to the __________ may affect near vision accommodation.

Correct AnswerverifiedShow Answer

The adrenal medulla secretes mostly ___________.

Correct AnswerverifiedE

The effect of autonomic fibers on target cells is _________.The effect of somatic fibers on target cells is __________.

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

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

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E

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A neuron that synapses in the adrenal medulla is a _ neuron,and releases the neurotransmitter _.

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E

The effect of autonomic fibers on target cells is _.The effect of somatic fibers on target cells is __.

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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.

Correct Answer
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