Question

10 points about of schematic sectional human heart

Answer 1

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Answer 2

The human body is the best machine created by God. Every single part of our body is so well designed, that it works continuously throughout our life. All major organs of the body like brain, heart, stomach, kidney, liver, etc., work in coordination to sustain one's life smoothly. In this working, heart holds a very important place. In this article, we are going to discuss various functions of heart with the help of a well labeled diagram. This diagram of the heart will not only give you details about the various parts, but will also explain the importance of keeping your heart healthy.
Human heart is slightly bigger than the size of one's fist. It is situated at a very safe place which is between the cage bones, i.e., in the center of the chest. 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 through constant contraction and relaxation of cardiac muscles. This is the reason why we hear rhythmic beats all the time. Heart pumps pure blood to 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 and pumps around 1,500 to 2,000 gallons of blood per day. Let's check out heart diagram which can help you to understand functioning of the heart in a better way.

Parts of the Heart

As you can see in the above diagram, heart consists of various parts. So, as we discuss the various parts, you keep checking out the parts simultaneously in the above given labeled diagram of the human heart. This will help you to understand the functioning of its different parts.

Pericardium
Human heart is covered by a double layered structure which is known 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.
Chambers
Heart is divided into four chambers, left atrium, left ventricle, right atrium and right ventricle. Atriums are the upper chambers of the heart, whereas ventricles are the lower chambers of the heart. All these chambers are separated by a layer of tissues known 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.
Valves
There are four valves in the heart namely bicuspid valve, tricuspid valve, pulmonary valve and aortic valve. They help in preventing the back flow of the blood from one chamber to other. This maintains a proper one directional blood flow throughout the process. Bicuspid valve is present between the left atrium and left ventricle whereas tricuspid valve is present between the right atrium and right ventricle. Pulmonary valve behaves as a gate which stops the back flow of blood from right ventricle to the pulmonary artery which takes the deoxygenated blood to the lungs for purification. Lastly the aortic valve, this valve plays an important role in stopping the back flow of the blood from left ventricle to the aorta. Once the blood is transferred to the aorta it supplies the oxygenated blood to different parts of the body.
Blood Vessels
Blood vessels are the blood carriers in a human body. These play a very vital role in the supply of blood to various parts of the body. Blood vessels can be of two types, veins and arteries. All the veins (except pulmonary vein) are involved in carrying the deoxygenated blood from various parts of the body to the heart whereas all the arteries (except pulmonary artery) are involved in supplying oxygenated blood from the heart to different parts of the body.