Blood flow through a capillary is controlled by the

Question

Quizplus · Accepted Answer

Capillary blood flow is regulated by precapillary sphincters, which are bands of smooth muscle that can constrict or dilate to control the flow of blood through capillary beds. The vasa vasorum are small blood vessels that supply the walls of large blood vessels, and are not directly involved in regulating blood flow through capillaries. Sinusoids are specialized capillaries found in organs such as the liver and spleen that allow large molecules and cells to pass through. Thoroughfare channels are direct connections between arterioles and venules that bypass the capillaries. Collaterals are alternative pathways of blood flow that can develop in response to blockages or other disruptions in blood flow.

Blood Flow Through a Capillary Is Controlled by the