To stay alive there are a few things that need to occur. One of these things is the transport of nutrients and gases to the cells around your body. If cells were to never receive the required nutrients they would not function properly and die. To make sure that your cells receive the nutrients and gases they need, the heart pumps blood throughout the entire body.
The heart is made of a completely different muscle from anything in your body. This muscle is called Cardiac muscle. Cardiac muscle is defined as being striated, branched, and unnucleated. One of the other most important things to be aware of about heart muscles is that they are not controlled directly by the brain. Instead, they have peacemaker cells that act as separate brains to keep a steady rate.
The Heart has four different chambers. These include the right and left atria as well as the right and left ventricle. These chambers are responsible for receiving and removing blood from the heart. The right side of the heart received blood that is not well oxygenated and pumps it to the lungs. The left side of the heart received oxygenated blood from the lungs and pumps it to the rest of the body to be used.