One inhibitor of cGMP is Viagra. It provides a signal that leads to dilation of blood vessels and increase of blood in the penis, facilitating erection. cGMP is inhibited, therefore the signal is prolonged. The original signal that is now inhibited would have

Question

Quizplus · Accepted Answer

The original signal that is inhibited by Viagra would have hydrolyzed cGMP to GMP, which would decrease the level of cGMP and lead to the cessation of the signaling pathway resulting in vasoconstriction and loss of erection. By inhibiting cGMP hydrolysis, Viagra prolongs the signal and facilitates vasodilation and the maintenance of an erection. Choices B-D and E are unrelated to cGMP signaling and are not relevant to the mechanism of action of Viagra.

One Inhibitor of CGMP Is Viagra