what are capillaries?
Answers
Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them. They help to connect your arteries and veins in addition to facilitating the exchange of certain elements between your blood and tissues.
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Answer:
Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins). The primary function of capillaries is the exchange of materials between the blood and tissue cells.
One of the minute blood vessels that connect arterioles and venules and are a part of an intricate network throughout the body for the interchange of oxygen, carbon dioxide, and other substances between blood and tissue cells.