1) it ensure efficient supply of oxygen to the body.
2) helpful to supply more energy
3) to maintain body temperature
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The cardiovascular or circulatory system is designed to ensure the survival of all cells of the body at every moment and it does this by maintaining the immediate chemical environment of each cell in the body (i.e., the interstitial fluid) at a composition appropriate for that cell's normal function. The term “homeostasis” is used to denote the approximate constancy of the internal environment (Claude Bernard, 1866).
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