PATHOLOGY

Detailed explanation-1: -The right side of the heart receives blood that is low in oxygen because most has been used up by the brain and body. It pumps this to your lungs, where it picks up a fresh supply of oxygen. The blood then returns to the left side of the heart, ready to be pumped back out to the brain and the rest of your body.

Detailed explanation-2: -The right side of the heart collects oxygen-depleted blood and pumps it to the lungs, through the pulmonary arteries, so that the lungs can refresh the blood with a fresh supply of oxygen.

Detailed explanation-3: -The oxygen-rich blood returns to the heart through the left atrium and eventually into the left ventricle. This chamber then pumps blood to the other organs of the body through the aorta.