Multiple Choice
The drug sildenafil (Viagra) increases a man's probability of an erection by
A) relaxing the muscles controlling blood flow to the penis.
B) increasing arousal of the sympathetic nervous system.
C) increasing the binding of testosterone to its receptors in the hypothalamus.
D) decreasing secretions of estrogen from the adrenal gland.
Correct Answer:
Verified
Correct Answer:
Verified
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