PATHOLOGY

Detailed explanation-1: -Oxygen-poor blood from all over your body enters your right atrium through two large veins, your inferior vena cava and superior vena cava. Your tricuspid valve opens to let blood travel from your right atrium to your right ventricle.

Detailed explanation-2: -The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle. The left ventricle pumps the oxygen-rich blood to the body.

Detailed explanation-3: -Right Atrium. The right atrium is the first chamber of the heart that the blood comes into contact with as it returns from the systemic circulation, and from the blood supply to the heart.

Detailed explanation-4: -The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide. The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body.