Meaning & use
Metarteriole
Last updated
A small blood vessel that connects an arteriole to a network of capillaries, helping regulate blood flow into the capillary bed.
See it in a sentence
Smooth muscle in the metarteriole walls controls how much blood reaches the surrounding capillaries.
The metarteriole acts as a kind of valve, directing blood flow during periods of high demand.
A note on using this word
Sits structurally between arterioles and true capillaries, and its sphincters govern local blood distribution in tissues.
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