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The Circulatory System
Essay specific features
Written by:
Ronald D
Date added:
August 3, 2013
Level:
University
Grade:
A
No of pages / words:
5 / 1399
Was viewed:
9472 times
Rating of current essay:
Essay content:
The right
side of the heart pumps oxygen-poor blood from the cells of the body back to the
lungs for new oxygen; the left side of the heart receives blood rich in oxygen
from the lungs and pumps it through the arteries to the various parts of the
body. Circulation begins early in fetal life. It is estimated that a given
portion of the blood completes its course of circulation in approximately 30
seconds...
displayed 300 characters
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The superior vena cava
and the inferior vena cava. When the right auricle contracts, it forces the
blood through an opening into the right ventricle. Contraction of this ventricle
drives the blood to the lungs. Blood is prevented from returning into the
auricle by the tricuspid valve, which completely closes during contraction of
the ventricle...
displayed 300 characters
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