Erection (vasodilation) of the penis or clitoris ________.
A) is the result of coordinated activation by both sympathetic and parasympathetic input
B) is primarily under sympathetic control
C) is primarily under parasympathetic control
D) depends very little on autonomic activation
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Question 2) Most blood vessels are innervated by the sympathetic division alone.
Indicate whether the statement is true or false
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Question 3) Drugs called beta-blockers ________.
A) decrease heart rate and blood pressure
B) have widespread sympathetic effects
C) increase a dangerously low heart rate
D) are potent antidepressants
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Question 4) Autonomic ganglia are sights of synapse and information transmission from preganglionic to postganglionic neurons.
Indicate whether the statement is true or false
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Question 5) Which of the following appears to exert the most direct influence over autonomic functions?
A) reticular formation
B) hypothalamus
C) midbrain
D) medulla oblongata
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Question 6) The craniosacral division is another name for the parasympathetic division.
Indicate whether the statement is true or false
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Question 7) Once a sympathetic preganglionic axon reaches a trunk ganglion, it can do all of the following EXCEPT?
A) ascend or descend the trunk to synapse in another trunk ganglion
B) synapse with a parasympathetic neuron in the same trunk ganglion
C) pass through the trunk ganglion without synapsing with another neuron
D) synapse with a ganglionic neuron in the same trunk ganglion
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Question 8) Autonomic ganglia are motor ganglia, containing the cell bodies of motor neurons.
Indicate whether the statement is true or false
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Question 9) The parasympathetic tone ________.
A) causes blood pressure to rise
B) prevents unnecessary heart deceleration
C) accelerates activity of the digestive tract
D) determines normal activity of the urinary tract
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Question 10) Visceral reflex arcs differ from somatic in that ________.
A) visceral arcs contain two sensory neurons
B) somatic arcs contain one additional component that visceral arcs do not possess
C) visceral arcs do not use integration centers
D) visceral arcs involve two motor neurons
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