Microvessel

Microvessels
A microvessel from the cerebral cortex of a rhesus macaque, stained for focal-adhesion kinase (green), zonula occludens 1 (red) and endothelial nuclei (blue)
Transmission electron microscope image of a capillary with a red blood cell within the pancreas. The capillary lining consists of long, thin endothelial cells, connected by tight junctions.
Details
System Circulatory system
Identifiers
TH H3.09.02.0.02001
Anatomical terminology

Microvessels are the smallest blood vessels in a body, including those responsible for microcirculation. They make up the microvasculature that distributes blood within tissues. Common examples of microvessels include:

  • Arterioles, a small diameter blood vessel that extends and branches out from an artery and leads to capillaries
  • Capillaries, the smallest blood vessels
  • Metarterioles, a vessel that links arterioles and capillaries
  • Venules, a blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins
  • Thoroughfare channel, a venous vessel receiving blood directly from capillary beds. It is a tributary to venules
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