A Bodily System made up of the heart ,blood vessels and blood that delivers nutrients and other essential materials to cells whilst removing waste products.

The mains of the heart is the left and right atrium and the right and left ventricle

For Adults 18 and older, a normal resting heart rate is between 60 and 100 beats per minute[bpm], depending on the persons physical condition and age. For children 6 to 15, the normal resting heart rate is between 70 and 100,bpm according to the AHA.