Question

what are capillaries? why do they have thin walls?

Answer 1

Caterpillars are the smallest blood vessels which are present inside the tissues that exchange blood between arteries and veins. Also Oxygen, carbon dioxide, nutrients and wastes are exchanged through the thin walls of the capillaries between blood and tissues.They have very small diameter and have very thin walls through which material can easily move. Caterpillars act as a link between arteries and veins.Caterpillars are tiny blood vessels that pass blood from the arteries into the veins. They are very small, the largest being about 10 micrometers in diameter. Their walls are thin which allows materials to pass into them. Different types of caterpillars exist and perform different functions for the body. Primarily, however, they are able to profuse the tissues of the body with needed oxygen and important nutrients which supplied by blood .

Answer 2

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