Gita Fulwiler had always been an early riser -- up and moving at the crack of dawn.But in June 2023, she started struggling to get out of bed. She ...

This is called systemic circulation. Oxygenated blood is carried to the heart from the lungs in the pulmonary vein. It goes into the left atrium, through the bicuspid valve and into the left ...

The left-hand side pumps oxygenated blood around the body. Each side of the heart consists of an atrium ... vein in the body. It carries deoxygenated blood from the body back to the heart. The ...