Erectile function requires an increase in ______, whereas ejaculation involves increases in ______.
A) myogenic dilation of vessels within erectile tissue : sympathetic nervous activity
B) parasympathetic nervous activity : sympathetic nervous activity
C) myogenic dilation of vessels within erectile tissue : myogenic constriction of the vas deferens
D) parasympathetic nervous activity : myogenic constriction of the vas deferens
E) sympathetic nervous activity : parasympathetic nervous activity

Question

Erectile function requires an increase in  ______, whereas ejaculation involves increases in  ______.
A) myogenic dilation of vessels within erectile tissue : sympathetic nervous activity
B) parasympathetic nervous activity : sympathetic nervous activity
C) myogenic dilation of vessels within erectile tissue : myogenic constriction of the vas deferens
D) parasympathetic nervous activity : myogenic constriction of the vas deferens
E) sympathetic nervous activity : parasympathetic nervous activity

Quizplus · Accepted Answer

Erectile function is primarily mediated by an increase in parasympathetic nervous activity, which leads to vasodilation and blood flow into the erectile tissues. Ejaculation is controlled by an increase in sympathetic nervous activity, which facilitates the emission and expulsion phases.

Erectile Function Requires an Increase in ______, Whereas Ejaculation