PATHOLOGY

Detailed explanation-1: -The heart, blood and blood vessels work together to service the cells of the body. Using the network of arteries, veins and capillaries, blood carries carbon dioxide to the lungs (for exhalation) and picks up oxygen. From the small intestine, the blood gathers food nutrients and delivers them to every cell.

Detailed explanation-2: -There are two types of blood vessels that facilitate the distribution of blood throughout the body. The vessels that bring oxygen-free blood back into the heart are called veins. Comparatively, the blood vessels that carry oxygen-rich blood away from the heart and to other body parts are called arteries.