4. The heart and lungs support each other to allow
distribution of nutrients and oxygen to all parts and
removal of carbon dioxide as a waste product in the
body.
The right side of your heart receives blood from the body and pumps it to the lungs. The lungs fill the blood with oxygen and then send it back to the heart. The left side of the heart receives this oxygen-rich blood from the lungs and pumps it out to the body.
