Question

describe the process of working of heart

Answer 1

The left side of your heart receives oxygen rich blood from your lungs and pumps it through your arteries to the rest of the body. Blood travels to your heart and lungs in four steps.

Answer 2

when the muscle of all the chamber of heart are relaxed the pulmonary vein bring the oxygenated blood from the lungs into the left atrium of the heart
when the left atrium contract the oxygenated blood is pushed into the left ventricle through valve
when left ventricle contract the oxygenated blood is forced into the aorta
aorta carries blood to all the organs