Chambers

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Harvard Medical School

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Chambers

Seniors' Health
22030
Heart Basics: An Interactive Illustration
Chambers
Chambers
htmJHEHeart.152176
Learn about the heart's four chambers. Includes an interactive illustration.
152176
InteliHealth
2011-12-02
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InteliHealth Medical Content
2014-12-02

Reviewed by the Faculty of Harvard Medical School

Chambers

Blood returning from the rest of the body enters the heart through the right atrium, which acts as something of a storage bin. After collecting in the right atrium, blood enters the right ventricle. As the right ventricle contracts, it pumps the blood into the lungs, where it is enriched with oxygen. Pulmonary veins in the lungs then bring the oxygen-enriched blood to the left atrium, where it collects until it is pushed into the left ventricle, the main pumping chamber of the heart. The left ventricle pumps the blood through the aorta and into the circulatory system, where it is distributed to the entire body.

In a healthy heart, blood cannot flow between the right and left sides. The atria are separated by a wall called the atrial septum and the ventricles by the ventricular septum.

 

Heart Basics Icon Click here for an illustration of the
heart chambers and flow of blood.

 

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heart,atria,left ventricle,ventricle,ventricles,left atrium
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Last updated December 02, 2011


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