The heart is a complex organ that pumps blood throughout the body. It sits in the chest, slightly left of center, behind the breastbone, and between the lungs. A heart that is not healthy does not ...

However, as the right coronary artery splits into different, smaller arteries, it also pumps blood toward the back wall of the left side of the heart. Share on Pinterest A diagram of the heart ...

including the human heart. Click on the body at left to learn more about these decidedly 21st-century technologies. Note: Whenever we discuss a specific product rather than a general type of ...