1
BIO 201 RIO SALADO EXAM 3/BIO 201 ANATOMY AND
PHYSIOLOGY EXAM WITH COMPLETE QUESTIONS AND
CORRECT VERIFIED ANSWERS
What is the mass reflex reaction?
It is also known as autonomic areflexia.
It usually precedes spinal shock.
It represents a return of reflex activity with no controls from higher centers.
It results from overexcitatory input from the cortex. - CORRECT ANSWER-It
represents a return of reflex activity with no controls from higher centers
Why are sympathetic responses generally widespread?
Inactivation of ACh is fairly slow
Preganglionic fibers are short
Single preganglionic axons make multiple synapses with ganglionic neurons
Preganglionic fibers are long - CORRECT ANSWER-Single preganglionic axons make
multiple synapses with ganglionic neurons
Sympathetic division stimulation causes which of the following?
Decreased blood glucose, increased GI peristalsis, and increased heart rate and
blood pressure
Increased blood glucose, decreased GI peristalsis, and increased heart rate and
blood pressure
Increased blood glucose, increased GI peristalsis, and decreased heart rate and
,2
blood pressure
,3
Decreased blood glucose, increased GI peristalsis, and decreased heart rate and
blood pressure - CORRECT ANSWER-Increased blood glucose, decreased GI
peristalsis, and increased heart rate and blood pressure
Which drug might be used specifically to reduce heart rate in cardiac patients?
Anticholinesterase
Norepinephrine
Epinephrine
A beta-blocker - CORRECT ANSWER-A beta-blocker
What structures are formed by fibers that enter and leave the sympathetic chain
without synapsing?
White rami communicantes
Spinal nerves
Gray rami communicantes
Splanchnic nerves - CORRECT ANSWER-Splanchnic nerves
Which of these effectors is not directly controlled by the autonomic nervous
system?
Smooth muscle
Skeletal muscle
Cardiac muscle
Most glands - CORRECT ANSWER-Skeletal muscle
, 4
All preganglionic axons of the autonomic nervous system release which of the
following?
Dopamine
The same transmitter as the only one released by the sympathetic postganglionic
axons
Serotonin
The same transmitter as the one released by parasympathetic postganglionic
axons - CORRECT ANSWER-The same transmitter as the one released by
parasympathetic postganglionic axons
Over 90% of all parasympathetic fibers are derived from which cranial nerve
number?
V
X
VII
XII - CORRECT ANSWER-X
Emotions influence autonomic reactions primarily through integration in which of
the following?
The lateral horn of the spinal cord
The lateral geniculate of the thalamus
The hypothalamus
The inferior colliculus - CORRECT ANSWER-The hypothalamus
BIO 201 RIO SALADO EXAM 3/BIO 201 ANATOMY AND
PHYSIOLOGY EXAM WITH COMPLETE QUESTIONS AND
CORRECT VERIFIED ANSWERS
What is the mass reflex reaction?
It is also known as autonomic areflexia.
It usually precedes spinal shock.
It represents a return of reflex activity with no controls from higher centers.
It results from overexcitatory input from the cortex. - CORRECT ANSWER-It
represents a return of reflex activity with no controls from higher centers
Why are sympathetic responses generally widespread?
Inactivation of ACh is fairly slow
Preganglionic fibers are short
Single preganglionic axons make multiple synapses with ganglionic neurons
Preganglionic fibers are long - CORRECT ANSWER-Single preganglionic axons make
multiple synapses with ganglionic neurons
Sympathetic division stimulation causes which of the following?
Decreased blood glucose, increased GI peristalsis, and increased heart rate and
blood pressure
Increased blood glucose, decreased GI peristalsis, and increased heart rate and
blood pressure
Increased blood glucose, increased GI peristalsis, and decreased heart rate and
,2
blood pressure
,3
Decreased blood glucose, increased GI peristalsis, and decreased heart rate and
blood pressure - CORRECT ANSWER-Increased blood glucose, decreased GI
peristalsis, and increased heart rate and blood pressure
Which drug might be used specifically to reduce heart rate in cardiac patients?
Anticholinesterase
Norepinephrine
Epinephrine
A beta-blocker - CORRECT ANSWER-A beta-blocker
What structures are formed by fibers that enter and leave the sympathetic chain
without synapsing?
White rami communicantes
Spinal nerves
Gray rami communicantes
Splanchnic nerves - CORRECT ANSWER-Splanchnic nerves
Which of these effectors is not directly controlled by the autonomic nervous
system?
Smooth muscle
Skeletal muscle
Cardiac muscle
Most glands - CORRECT ANSWER-Skeletal muscle
, 4
All preganglionic axons of the autonomic nervous system release which of the
following?
Dopamine
The same transmitter as the only one released by the sympathetic postganglionic
axons
Serotonin
The same transmitter as the one released by parasympathetic postganglionic
axons - CORRECT ANSWER-The same transmitter as the one released by
parasympathetic postganglionic axons
Over 90% of all parasympathetic fibers are derived from which cranial nerve
number?
V
X
VII
XII - CORRECT ANSWER-X
Emotions influence autonomic reactions primarily through integration in which of
the following?
The lateral horn of the spinal cord
The lateral geniculate of the thalamus
The hypothalamus
The inferior colliculus - CORRECT ANSWER-The hypothalamus
