Multiple Choice
What structures inside the human penis are responsible for an erection?
A) columns of erectile tissue that fill with blood
B) a series of small bones that push out of the pelvic cavity and into the penis during arousal
C) small balloon-like glands that fill with air
D) one large bone that pushes out of the pelvic cavity and into the penis during arousal
Correct Answer:
Verified
Correct Answer:
Verified
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