Heart Facts for Kids The human heart is the main component of the human body’s circulatory system. The heart pumps blood through the human body via blood vessels. The heart is in the middle compartment of the chest, between the lungs.
Heart Pictures. An electrocardiogram, like the one above, is also called an ECG or EKG. It is a graphic record of the heart’s electrical activity and can be used to diagnosis heart disease or rapid heartbeats, such as atrial fibrillation.
The human heart is the main component of the human body’s circulatory system. The heart pumps blood through the human body via blood vessels. The heart is in the middle compartment of the chest, between the lungs. A healthy, adult human heart is about the size of a human fist. A healthy, adult human heart will weigh between 9 and 12 ounces.