The heart powers everything you do. It pumps without you thinking about it, and beats over a billion times in an average lifetime. But how does it work?
- The heart is the hardest working muscle in the body - beating 100,000 times a day.
- The heart has two sides, each with two chambers - the atrium and the ventricle.
- The right side of the heart receives deoxygenated blood and pumps it to the lungs.
- The left side of the heart receives oxygenated blood from the lungs and pumps this around the body.