Microvessel or microvasculature can refer to:

• Arteriole, a small diameter blood vessel that extends and branches out from an artery and leads to capillaries
• Capillary, the smallest blood vessels
• Metarteriole, a vessel that links arterioles and cappilaries
• Sinusoid (blood vessel), similar to a capillary, but with a discontinuous endothelium
• Venule, a blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins
• Microcirculation, the system of smaller blood vessels that distribute blood within tissues

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