Erectile dysfunction drugs cause
A) penis muscle to contract.
B) blood vessels of the penis to widen.
C) the spongy tissue of the penis to stiffen.
D) an increase in hydrostatic pressure.
E) increased semen flow.

Question

Quizplus · Accepted Answer

Erectile dysfunction drugs work by inhibiting the enzyme that breaks down a molecule called cyclic guanosine monophosphate (cGMP). cGMP is responsible for relaxing the smooth muscle cells and widening the blood vessels in the penis, allowing an increase in blood flow and engorgement of the spongy tissue, ultimately leading to an erection. By inhibiting the breakdown of cGMP, erectile dysfunction drugs prolong the effects of this molecule, leading to increased blood flow and improved erections.

Erectile Dysfunction Drugs Cause