The Human Heart

Topics: Heart, Blood, Blood vessel Pages: 4 (883 words) Published: March 25, 2011
The human heart is slightly bigger than the size of ones fist. It is situated at a very safe place which is between the cage bones, i.e., in the center of the chest. Usually it is slightly on the left side of the chest but in rare cases, it can be found on the right side. Heart is responsible for the blood flow to every single part of the body by constant contraction and relaxation of cardiac muscles. This is the reason why we hear rhythmic beats all the time. Heart pumps the pure blood to the different parts of the body and then takes the deoxygenated blood from all the parts to the lungs for oxygenation. Normally in a minute the heart beats 72 times. Well, let's check out heart diagram for kids as well as for adults which can help you to understand the functioning of heart better.

Parts of the Heart

As you can see in the heart diagram, there are many parts in the heart. So, as we discuss the various parts, you keep checking out the parts simultaneously one by one in the given labeled diagram of the human heart. This will help you to understand the part and their functions more easily.

Human heart is covered by a double layered structure which is called as pericardium. The outer layer is associated with the major blood vessels whereas the inner layer is attached to the cardiac muscles. These layers are separated by a pericardial fluid. This covering is like a membrane which holds all the parts of the heart.

Heart is divided into four chambers which are called as left atrium, left ventricle, right atrium and right ventricle. Atrium are the upper chambers of the heart whereas ventricles are the lower chambers of the heart. All these chambers are separated by a tissue layer, called as septum. Left side of the chamber is associated with the circulation of the oxygenated blood and the right side receives the deoxygenated blood from various parts of the body.

There are four valves in the heart namely bicuspid valve,...
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