Capillaries are the smallest type of blood vessels. A capillary connects an arteriole (small artery) to a venule (small vein) to form a network of blood vessels in almost all parts of the body. The wall of a capillary is thin and leaky, and capillaries are involved in the exchange of fluids and gases between tissues and the blood.
A Answers (3)
Piedmont Heart Institute answered
American Heart Association answered
Capillaries are microscopically small blood vessels connecting arteries and veins. They distribute oxygenated blood to the body’s tissues.
American Diabetes Association answeredA capillary is the smallest of the body's blood vessels. Oxygen and glucose pass through capillary walls and enter the cells. Waste products such as carbon dioxide pass back from the cells into the blood through capillaries.