Erection of the penis results from ________.
A) dilation of the veins in the penis
B) a sympathetic reflex
C) parasympathetic activation of the bulbourethral glands
D) a parasympathetic reflex

Question

Quizplus · Accepted Answer

Erection of the penis results from a parasympathetic reflex, specifically activation of the parasympathetic nervous system. This causes the release of nitric oxide, which leads to relaxation of smooth muscles in the arteries of the penis, an increase in blood flow, and ultimately an erection.

Erection of the Penis Results from ________