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The Different Chambers of Your Heart

Updated on March 4, 2012

The human heart is separated into four chambers – the left and right ventricles and atria. Let us see in detail about the anatomy of the heart along with the left and right chambers.

The heart is composed of cardiac muscles and is responsible for pumping the blood to all the other organs in our body. It is divided into four chambers – two ventricles and two atria.

Ventricles and Atria

The blood enters the heart from circulation through the Atria. The Atria is located above the Ventricles and it is thin walled. The Ventricles are located just beneath the Atria and their job is to pump the blood into the other organs of the body.

Right and Left heart

A septum divides the heart into two sides – right and left. An atrium and Ventricle are present on each side. The division is very significant because it helps us to understand how the heart works and if it somehow malfunctions, the person may experience heart block symptoms. The right side is responsible for sending the blood to the lungs while the left side sends the blood to all other organs. In a healthy heart, there will be no connection between the two sides. But, in atypical conditions like a heart hole, the communication link might prevail.

The Right Atrium and Ventricle


There are two openings in the right atrium by the name of inferior and superior vena cava which will receive the venomous blood. The Superior Vena Cava receives the venomous blood from neck, head and upper limbs while the Inferior Vena Cava receives it from lower limbs and abdomen.

The Right Atrium might also receive the venomous blood from other organs such as cardiac veins and coronary sinus.

The blood which enters the right atrium contains more carbon dioxide and does not contain oxygen.

During the contraction of the right atrium, the venomous blood enters the right Ventricle through the tricuspid valve.

The triangular right Ventricle transports the deoxygenated blood into the lungs through the pulmonary artery and this eliminates carbon dioxide.

The Left Atrium and Ventricle

The pulmonary veins bring in the oxygenated blood to the left Atrium from the lungs. During the contraction of the left atrium, the blood moves enters the left Ventricle through the mitral valve.

After the blood enters the left ventricle, it is transported to the rest of the body through aorta. The aorta is the largest artery present in the human body.

That’s pretty much all about the different chambers of the heart and this is how the cardiac conduction system works.

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