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Essay Galaxy - The Circulatory System
The Circulatory System
The circulatory system in anatomy and physiology is the course taken by
the blood through the arteries, capillaries, and veins and back to the heart. In
humans and the higher vertebrates, the heart is made up of four chambers the
right and left auricles, or atria, and the right and left ventricles. 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.
Pulmonary circulation is where the blood from the entire body is
transported to the right auricle through two large veins. The superior vena cava
an....
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Number Of Pages: 6 |
Number Of Words: 1409 |
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