Multiple Choice
Which event occurs prior to the others during a penile erection?
A) Increase in the second messenger cGMP in smooth muscle cells of blood vessels
B) Erectile tissue fills with blood
C) Release of nitric oxide, which affects the blood vessels entering the penis
D) Compression of vessels that carry blood away from the penis
E) Dilation of blood vessels entering the penis
Correct Answer:
Verified
Correct Answer:
Verified
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