Microvessel
Microvessels | |
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![]() 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
![](../I/m/Illu_capillary.jpg)
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