Sphincter muscles regulate the opening and closing of arterioles leading to capillary beds, directing the flow of blood to different areas of the body depending on the body's needs.

Question

Quizplus · Accepted Answer

Sphincter muscles, specifically precapillary sphincters, control blood flow into capillary beds by contracting or relaxing, thus regulating blood distribution based on the body's requirements.

Sphincter Muscles Regulate the Opening and Closing of Arterioles Leading