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The Heart
Beginning of essay
Introduction
You need your heart for all your body needs. It pumps about 2000
gallons of blood a day. It takes about 20 seconds for blood to reach every
cell in the body. An artery carries blood out from the heart. A vein carries
blood back to the heart. An average adult heart weighs about 10- ....
Middle of essay
.... epicardium is a small amount of fluid. This fluid
makes the movement of the heart muscles smooth. Myocardium is the heart muscle
itself.
Atriums
The right atrium is a low pressure pump that moves blood into the right
ventricle through the tricuspid valve. The atria are the two upper chambers of
the heart. The right atrium receives blood from the veins which is low in
oxygen and high in carbon dioxide; this blood is then transferred to the right
lower chamber, or right ventricle, a.... |
| Number of words: 1535 |
Approximate pages: 6 |
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