The heart is a hollow muscular organ that acts as a pump and is responsible for the circulation of the blood. The heart is cone shaped, with the point downwards, and is situated behind the lungs. A septum divides the heart into right and left valves, each of which is further divided into an upper chamber, known as an atrium, and a lower one, called a ventricle. Four valves control the direction of the blood flow at each outlet.
Pumps blood and keeps us alive
The heart pumps and regulates the blood.
The blood go to your body