ANATOMY

Detailed explanation-1: -With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen to every cell. After delivering the oxygen, the blood returns to the heart. The heart then sends the blood to the lungs to pick up more oxygen.

Detailed explanation-2: -It’s the muscle at the centre of your circulation system, pumping blood around your body as your heart beats. This blood sends oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products.

Detailed explanation-3: -Systemic circulation, pulmonary circulation and portal circulation. Systemic circulation describes the movement of blood from the heart via arteries to the periphery, and back to the heart via the veins. Pulmonary circulation describes the movement of blood from the heart to the lungs and back to the heart.

Detailed explanation-4: -The system that contains the heart and the blood vessels and moves blood throughout the body. This system helps tissues get enough oxygen and nutrients, and it helps them get rid of waste products.