Question

how does the heart work?? for class7

Answer 1

Answer:

The human heart works like a pump sending blood around your body to keep you alive. ... This blood delivers oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products. Your heart and circulatory system works together to deliver blood to your organs so they can function.

Answer 2

Answer:

The right ventricle pumps the blood to the lungs for re-oxygenation through the pulmonary arteries. The right semilunar valves close and prevent the blood from flowing back into theheart. Then, the oxygenated blood is received by the left atrium from the lungs via the pulmonary veins.