chapter 14: autonomic nervous system

Question 1

Which pathway(s) compose the autonomic nervous system?

Answer 1

B + C

Question 2

Assume that the triangular and circular molecules shown in the illustration represent specific neurotransmitters. Which of the following best describes the effect on the heart of neurotransmitters released from the postganglionic neurons of B and C?

Answer 2

B would increase heart rate, while C would decrease it.

Question 3

The circular structures shown within pathways B and C represent which of the following?

Answer 3

ganglia

Question 4

Which of the following releases the neurotransmitter norepinephrine?

Answer 4

terminus of a sympathetic postganglionic neuron

Question 5

The synapse in pathway B has several possible locations. Which of the following is NOT a possible location?

Answer 5

spinal cord

Question 6

Where are ganglia of the parasympathetic division located?

Answer 6

within or near effector organs

Question 7

Outflow of the sympathetic division occurs from which regions of the CNS?

Answer 7

thoracic and lumbar

Question 8

Which organ receives major input from the sympathetic, but not parasympathetic, division?

Answer 8

skin

Question 9

Which of the following is not an autonomic nervous system (ANS) function?
A. gland secretion
B. skeletal muscle reflex
C. increasing heart rate
D. emptying the bladder

Answer 9

B. skeletal muscle reflex

Question 10

Which of the following is not associated with the parasympathetic division of the autonomic nervous system (ANS)?
A. resting
B. digesting
C. energy conservation
D. emergency action

Answer 10

D. emergency action

Question 11

What differentiates an autonomic reflex from a somatic reflex?

Answer 11

a two-neuron motor pathway

Question 12

Which of the following is responsible for the overall integration of the autonomic nervous system (ANS)?
A. frontal lobe of the cerebral cortex
B. reticular formation
C. brain stem
D. hypothalamus

Answer 12

D. hypothalamus

Question 13

Which of the following is a way in which the somatic and autonomic nervous systems are similar?
A. Both systems share common efferent pathways.
B. Both systems elicit the same target organ responses to their neurotransmitters.
C. Both systems share common effectors.
D. Both systems have ganglia in their motor pathways.
E. None of the listed responses is correct.

Answer 13

E. None of the listed responses is correct.

Question 14

Which of these activities is most likely driven by parasympathetic innervation?
A. fight-or-flight responses
B. sweating and dilating pupils
C. vigorous physical activity
D. resting and digesting

Answer 14

D. resting and digesting

Question 15

Which target organ is not affected by the parasympathetic division of the autonomic nervous system (ANS)?
A. lungs
B. liver
C. adrenal medulla
D. heart

Answer 15

C. adrenal medulla