Heart Rate Calculator Resting Heart Rate

• The heart is a muscle


• Its located in at the middle-lift of your body


• Its about the size of a fist


• The heart provides your body with the oxygen and nutrients it needs


• It collects waste, such as carbon dioxide


• The right side of a heart receives blood from the body and pumps it to the lungs


• The left side of your heart receives blood from the lungs and pumps it out to the body


• The heart is made of four chambers, two on each side of the heart


• The two chambers at the top are called atria (ay-tree-uh)


• The two chambers at the bottom are called ventricles


• There is a thick wall of muscle called the septum running down the middle of the heart to seperate the left and right side of the heart


• Arteries carry blood away from the heart


• Veins carry blood back to the blood the heart