Precapillary sphinctersA) Simple squamous epithelium of capillariesB) Drain capillary networksC) Regulate blood flow into capillariesD) Do not have fenestraeE) Bypass capillary beds

Question

Benton Schiebel · Accepted Answer

Final Answer : C, Explanation :  Precapillary sphincters are rings of smooth muscle located at the entrance to capillary beds, which regulate the flow of blood into those capillaries. By contracting or relaxing, they control how much blood enters the capillaries, thus playing a crucial role in regulating blood flow and pressure within tissues.

Precapillary sphincters

A) Simple squamous epithelium of capillaries
B) Drain capillary networks
C) Regulate blood flow into capillaries
D) Do not have fenestrae
E) Bypass capillary beds

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