Biology, 05.10.2019 02:40, sleepypizza
The cardiovascular system performs four main functions: first, of the heart generate blood pressure, which moves blood through the .
*second, the blood vessels blood from the heart into arteries, capillaries, and veins. then, blood returns to the heart to complete the .
*third, gas occurs in the capillaries, where oxygen is dropped off for the cells, and coâ‚‚ and wastes are picked up.
*finally, the heart and blood vessels blood flow, according to the needs of the body.
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The cardiovascular system performs four main functions: first, of the heart generate blood pressur...
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