What is the function of the capillaries?

Capillaries contain small holes in their structure that allow oxygen and other nutrients to pass through into organs and tissues. Specific types of capillaries are determined by their functions, which affects their number and placement in the body. read more

Capillaries are the thinnest blood vessels in the body. These vessels are found throughout the body and bring oxygen and necessary nutrients to every cell in the body and remove cell waste. Capillary walls are selectively permeable, allowing some, but not all substances through. read more

Individual capillaries are part of capillary bed, an interweaving network of capillaries supplying tissues and organs. The more metabolically active a tissue is, the more capillaries are required to supply nutrients and carry away waste products. read more