Question

give the functions of capillaries

Answer 1

Capillaries are very thin blood vessels that were first discovered in frog lungs in 1661. They bring nutrients and oxygen to tissues and remove waste products. Capillaries are the smallest blood vessels in the body, connecting the smallest arteries to the smallest veins. These vessels are often referred to as the "microcirculation." Only two layers of cells thick, the purpose of capillaries is to play the central role in the circulation, delivering oxygen in the blood to the tissues, and picking up carbon dioxide to be eliminated. They are also the place where nutrients are delivered to feed all of the cells of the body. There are three primary types of capillaries, continuous, fenestrated, and discontinuous or sinusoidal that are found in different regions of the body, and specialized capillaries in the brain make up the blood-brain barrier. Tests that evaluate the capillaries are important in assessing people medically, and there are several medical conditions associated with these vessels.

Answer 2

Capillaries transport blood to organs
They are usually present on the surface of the internal organs.
Their main function is to transport blood.
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