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The Circulatory System
Beginning of essay
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 ....
Middle of essay
....ides into a number of main branches, which in turn divide
into smaller ones until the entire body is supplied by an elaborately branching
series of blood vessels. The smallest arteries divide into a fine network of
still more minute vessels, the capillaries, which have extremely thin walls;
thus, the blood is enabled to come into close relation with the fluids and
tissues of the body. In the capillaries, the blood performs three functions then
it releases its oxygen to the tissues, it furnishes .... |
| Number of words: 1389 |
Approximate pages: 6 |
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