ANATOMY

Detailed explanation-1: -The heart’s role is to pump oxygen-rich blood to every cell in the body. The blood vessels-a network of interconnecting arteries, arterioles, capillaries, venules, and veins-provide the pathway in which blood travels.

Detailed explanation-2: -What are blood vessels? Blood vessels are channels that carry blood throughout your body. They form a closed loop, like a circuit, that begins and ends at your heart. Together, the heart vessels and blood vessels form your circulatory system. Your body contains about 60, 000 miles of blood vessels.

Detailed explanation-3: -The great vessels of the heart include your aorta, pulmonary trunk, pulmonary veins and vena cava (superior and inferior). They connect directly to your heart and play a vital role in your circulatory system.

Detailed explanation-4: -Your heart and blood vessels make up the circulatory system. The main function of the circulatory system is to provide oxygen, nutrients and hormones to muscles, tissues and organs throughout your body. Another part of the circulatory system is to remove waste from cells and organs so your body can dispose of it.