Functions of the Heart

Mechanism of Human Heart

The heart is the main part of the circulatory system, which is a network of blood vessels that delivers oxygenated blood to every part of your body. Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. Functions of the heart conducted by these three main types of vessels that make up this system:

  1. Arteries- It carries oxygenated blood to every part of your body from the heart.
  2. Veins- Veins take deoxygenated blood back to the heart from the whole body.
  3. Capillaries- Capillaries are small thin blood vessels that connect the arteries and the veins in the tissues.

Oxygen-containing pure blood and carbon dioxide-containing oxygen are called impure blood. Purified blood flows in all the arteries except the pulmonary artery and impure blood flows in all other veins except the pulmonary vein only.

functions of the heart

The human heart performs regular, continuous, and lifelong pumping of blood. On one hand, it receives blood from different parts of the body through veins, on the other hand with pressure it sends it back to the organs through the arteries. A normal human’s heart beats 72 to 75 times in 1 minute, this is called heart pulsing rate.

Heart Pulsation During Functions of the Heart

While pumping blood, the heart gradually stretches and narrows its muscles. When muscles expand, it is called diastole and when narrowed it is called systole. In the state of diastole, blood is absorbed and pumped into the systole. Once, the action of diastole and systole is called a heart pulsation. These functions of the heart last for a lifetime.

Blood Circulation in the Heart

Impure blood containing carbon dioxide from different parts of the body comes to the right atrium by the fore and lower veins. At the same time, pure blood from the lungs enters the left atrium. This is followed by systole of the two atriads simultaneously, and it enters the ventricles on its side by the artrio-ventricular apertures. This is followed by systole in both ventricles, whereby the blood of the right ventricle goes through the pulmonary aorta to be oxidized to the lungs and the left ventricular oxygenated pure blood reaches the entire body by the carotid-systemic aorta. When the ventricles pump blood, the bicuspid and tricuspid valves of the atrial ventricles stop the blood from going back into the atrium. The bottom of the somatic aortic vertebral lobe is called the aorta, which delivers pure blood to all parts of the human body except the cranium and cervix. At the end of the systole in the ventricles, the atrium begins to contract again. In this way, the circulation of blood continues continuously throughout the body.

blood circulation

Dual blood Circulation

Oxidized blood flows to the left part of the heart and deoxygenated blood flows to the right side. During circulation, blood comes to the human heart twice and goes twice. This is why it is called double blood circulation. Can be divided into the following two parts-

1.Pulmonary Circulation

Impure blood from different parts of the human body comes in the right atrium. This blood reaches the right ventricle after systole in the right atrium. From there, it goes into the lungs to be oxidized by the pulmonary artery. After being oxidized in the lungs, this blood enters the left ventricle via the left atrium and goes back into the body through the somatic aorta. A complete circulation circuit is thus formed. This is called the pulmonary circulation.

2. Somatic circulation

Pureblood from the lungs enters the left atrium by pulmonary veins and it reaches the left ventricle when systole in left pleasure. After reaching the left ventricle, it reaches the entire body through the somatic aorta. After this oxygen is released from it, it gets into the right atrium through the veins to get the blood oxidized. From the right atrium, it reaches the pulmonary artery via the right ventricle to be re-oxidized to the lungs. Thus a circulatory circuit is formed, it is called somatic circulation. These functions of the heart last for a lifetime.

functions of the heart

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