Select the correct statement about male sexual response.
A) Sympathetic impulses are responsible for causing penile arteriolar dilation, resulting in erection.
B) Erection is the result of vascular spaces in the erectile tissues filling with blood.
C) Expansion of the penile tissues results in dilation of the venous outflow.
D) Ejaculation is the result of parasympathetic stimulation.

Question

Quizplus · Accepted Answer

Erection is the result of vascular spaces in the erectile tissues filling with blood. During sexual arousal, the parasympathetic nervous system releases nitric oxide, which leads to relaxation of smooth muscle in the arterial walls and increased blood flow to the penis. This increased blood flow fills the spongy tissue of the penis, causing it to become erect.

Select the Correct Statement About Male Sexual Response