Overall in the capillary bed, the net hydrostatic pressure tends to move fluid out of the capillary.
The smallest type of blood vessel. Capillaries connect arterioles (small arteries) to veins (small veins) to form a network of blood vessels in nearly every part of the body. The walls of capillaries are thin and leaky, and capillaries are involved in the exchange of fluids and gases between tissue and blood.
Capillaries are small blood vessels 5 to 10 micrometers (μm) in diameter. The capillaries consist only of a thin-walled lining of simple squamous endothelial cells. They are the smallest blood vessels in the body and carry blood between arterioles and venules.
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