Structure of the Human Circulatory Instrument
Circulatory system in humans is composed of the heart as the center of circulation, blood vessels and the blood itself.
1. Heart
The heart has four chambers that divided the two porch perfect (the atria) and two chambers (the ventricles) and is located on the left chest cavity above the diaphragm. Heart wrapped by the pericardium pouch consisting of 2 pieces:
a. panistalis in outer lamina
b. visceral lamina attached to the wall of the heart.
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