The main control of peripheral resistance occurs in the
A) arterioles.
B) venules.
C) veins.
D) arteries.
E) capillaries.

Question

Quizplus · Accepted Answer

Arterioles are the smallest blood vessels that regulate the blood flow to tissues by changing their diameter. The diameter of arterioles is controlled by smooth muscle cells and is influenced by various factors, including neural and hormonal signals, local metabolites, and endothelial cells. Therefore, the main control of peripheral resistance, which determines blood pressure, occurs in the arterioles.

The Main Control of Peripheral Resistance Occurs in the