precapillary (redirected from precapillary sphincters)

precapillary /pre·cap·il·lary/ (-kap´i-lar?e)

1. located just to the arterial side of a capillary.

2. arterial capillary.

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pre·cap·il·lar·y (pr-kp-lr)

adj.

Preceding a capillary. Used of an arteriole or venule.

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precapillary

a vessel lacking complete coats, intermediate between an arteriole and a capillary.

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precapillary sphincters

capillaries with a muscle layer which controls the flow of blood from the arterioles into the capillary bed.