MEDICAL PHYSIOLOGY

Detailed explanation-1: -The smallest tubes are called capillaries. As blood moves through the capillaries, the oxygen and other nutrients move out into the cells. Then waste matter from the cells goes into the capillaries.

Detailed explanation-2: -Capillaries are the smallest blood vessels in the body.

Detailed explanation-3: -capillaries-these are tiny vessels that connect arteries and veins. Their thin walls allow blood to come into close contact with tissues to exchange oxygen, carbon dioxide, nutrients and waste products.

Detailed explanation-4: -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.