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Medical Term:

postcapillary venules


the microvasculature immediately following the capillaries, ranging in size from 10–50 mcm, and characterized by investment of pericytes; they are the site of extravasation of blood cells, are particularly sensitive to histamine, and are believed to be important in blood-interstitial fluid exchanges.

Synonym(s): pericytic venules

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.