Question

With the help of labelled diagrams describe the structure of an artery , a vein and a capillary. State how each of these are adapted for its functions.

Answer 1

The artery are the blood vessels which carry the blood away from the heart to all other parts of the body . The artery carry oxygenated blood , nutrients such as hormones , enzyme etc. to the different parts of the body . The arteries are thick walled .

The vein is the blood vessel which carries the deoxygenated blood from different parts of the body back to heart . The veins carry the blood towards the heart which consists of the waste material . As compared to arteries the veins are thin walled .

The capillary are the vessels which carry the blood away from the heart . The major function of the capillary is to exchange nutrients , waste and oxygen with the tissues . The capillaries are the smallest blood vessels