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Acronyms that contain the term precapillary sphincter
What does precapillary sphincter mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: precapillary sphincter.
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What does precapillary sphincter mean?
- Precapillary sphincter
- A precapillary sphincter is a band of smooth muscle that adjusts blood flow into capillaries mainly in the mesenteric microcirculation. At the point where each of the capillaries originates from an arteriole, a smooth muscle fiber encircles the capillary. This is called the precapillary sphincter. The sphincter can open and close the entrance to the capillary, by which contraction causes blood flow in a capillary to change as vasomotion occurs. The entire capillary bed may be bypassed by blood flow through arteriovenous anastomoses or through preferential flow through metarterioles. If the sphincter is damaged or cannot contract, blood can flow into the capillary bed at high pressures. When capillary pressures are high (as per gravity, etc.), fluid passes out of the capillaries into the interstitial space, and edema or fluid swelling is the result.
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"precapillary sphincter." Abbreviations.com. STANDS4 LLC, 2024. Web. 6 May 2024. <https://www.abbreviations.com/precapillary%20sphincter>.
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