The penis contains ________ columns of erectile tissue that become functional when blood vessels ________.
A. 3; constrict
B. 2; constrict
C. 3; dilate
D. 2; dilate
Answer: C
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Which term describes nerve fiber tracts that cross over from one side of the body to the other?
A. Divergent B. Convergent C. Decussate D. Ipsilateral E. Contraindicate
What term describes the amount of blood ejected from the ventricle per beat?
A. Heart rate B. Cardiac output C. Stroke volume D. Cardiac reserve
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