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The heart is made up of four chambers. The two upper chambers are called atrium and the two lower chambers are called ventricles. The right side of the heart pumps blood to the lungs and exchanges carbon dioxide for oxygen, then returns to the left side of the heart, where the oxygenated blood is pumped back to the body. This cycle repeats endlessly.

Here is a link for a picture of the anatomy of the heart, you will probably have to copy and paste:

http://www.answers.com/heart?gwp=11&ver=2.4.0.651&method=3

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14y ago

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Related Questions

What is each side of the heart that is separated from the other side by a wall called?

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Each heart valve is heard best on the left side on the animal's body. This is why humans used to believe the heart was located on the left side.


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What are blood vessels that carry blood back to the upper right side of the heart?

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