How many chambers is your heart divided into?

The heart has two upper chambers (the right and left atria) and two lower chambers (the right and left ventricles). The right side of your heart pumps oxygen-poor blood to your lungs; the left side receives oxygen-rich blood from the lungs and sends it through the aorta to the rest of your body.

Asked by Pamela Ferdinand · Last updated 5 years ago · 1.7M views