THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Capillaries are so small that blood cells can only move through them one at a time. Oxygen and food nutrients pass from these capillaries to the cells. Capillaries are also connected to veins, so wastes from the cells can be transferred to the blood.

Detailed explanation-2: -Capillaries are tiny vessels that transport blood, nutrients and oxygen to cells in your organs and body systems.

Detailed explanation-3: -One of the key functions of blood is transport. Blood vessels are like networks of roads where deliveries and waste removal take place. Oxygen, nutrients and hormones are delivered around the body in the blood and carbon dioxide and other waste products are removed.

Detailed explanation-4: -The walls of capillaries are just one cell thick. Capillaries therefore allow the exchange of molecules between the blood and the body’s cells-molecules can diffuse across their walls. This exchange of molecules is not possible across the walls of other types of blood vessel.