Nitric oxide released by endothelial cells in vascular smooth muscle is responsible for smooth muscle relaxation and therefore responsible for which of the following?
A)reduced blood flow to bronchioles
B)increased blood flow in placenta
C)increased blood flow to the fetus
D)penile erection

Question

Quizplus · Accepted Answer

Nitric oxide released by endothelial cells in vascular smooth muscle is responsible for smooth muscle relaxation, which leads to dilation of blood vessels. This dilation of blood vessels allows for increased blood flow to certain tissues, such as the erectile tissue of the penis, leading to penile erection.

Nitric Oxide Released by Endothelial Cells in Vascular Smooth Muscle