Deck 11: The Autonomic Nervous System and Its Central Control

Question 1

Urinary continence is maintained by excitatory:

A)Somatic innervation of the internal sphincter.
B)Postganglionic parasympathetic innervation of the detrusor muscle.
C)Postganglionic parasympathetic innervation of the internal sphincter.
D)Postganglionic sympathetic innervation of the detrusor muscle.
E)Postganglionic sympathetic innervation of the external sphincter.

Answer 1

B

Question 2

Damage to the intermediolateral cell column in the upper thoracic spinal cord causes:

A)Ptosis
B)Pupillary dilation
C)Increased sweating on the face
D)Paralysis of the thoracic musculature
E)Increased sweating on the body

Answer 2

A

Question 3

A lesion in the preoptic region of the hypothalamus causes:

A)Hypothermia
B)Decreased sweating
C)Increased food intake
D)Decreased food intake
E)Cutaneous vasodilation

Answer 3

B

Question 4

The parasympathetic system differs from the sympathetic system by:

A)Exiting the central nervous system (CNS)at spinal cord levels.
B)Having a two-neuron motor pathway.
C)Having preganglionic cell bodies located in the CNS.
D)Having short postganglionic axons.

Question 5

Norepinephrine is a neurotransmitter:

A)At all autonomic ganglia.
B)For all postganglionic parasympathetic nerves.
C)For all preganglionic sympathetic nerves.
D)For most postganglionic sympathetic nerves.
E)For most postganglionic parasympathetic nerves.

Question 6

Maintenance of body temperature in a cold environment involves all of the following except:

A)Shivering thermogenesis.
B)brown adipose tissue (BAT)thermogenesis.
C)Cutaneous vasoconstriction.
D)Voluntary behaviors (e.g.,closing an open window).
E)A decrease in thyroid activity.

Question 7

In controlling micturation:

A)Sympathetic and somatic nerves act synergistically.
B)Sympathetic and parasympathetic nerves act synergistically.
C)Parasympathetic and somatic nerves act synergistically.
D)Sympathetic,parasympathetic,and somatic nerves all act synergistically.

Question 8

Postganglionic neurons are found in which of the following?

A)Intermediolateral cell column
B)Thoracic ventral root
C)White communicating ramus
D)Paravertebral ganglion
E)Gray communicating ramus

Question 9

Leptin acts to control body fat levels (adiposity)by:

A)Inhibiting food intake.
B)Stimulating proopiomelanocortin (POMC)/ cocaine- and amphetamine-related transcript (CART)neurons in the hypothalamus.
C)Inhibiting neuropeptide Y (NPY)/ agouti-related peptide (AgRP)neurons in the hypothalamus.
D)Promoting the loss of fat tissue.
E)Decreasing in response to increased adiposity.