The Heart

The topic I chose to do my report on is heart. The heart is an organ that pumps blood through the body. The heart is apart of the circulatory system. It distributes oxygen and nutrients to the body. It carries away carbon dioxide and other waste products. The heart is an important part of the circulatory system because it is the power supply. If the heart stops pumping blood more than a few minutes you can die.

The heart is shaped like an upside down pear. The heart is located to the left center inside the chest cavity. It is about the size of a balled up fist. The heart is made out of muscle tissue. It contracts to put through blood the whole body.

The heart has four chambers. The upper two chambers are the right and left atria. These chambers are to receive blood. The lower two chambers are at the right and left ventricles. These chambers are powerful working chambers. A wall of tissue separates the right and left side of the heart from e...