A circulatory system is a system that uses blood vessels with pumps and valves that ensures one way flow of blood.
Un sistema circulatorio es un sistema que utiliza vasos sanguíneos con bombas y válvulas que aseguran un flujo sanguíneo unidireccional.
| Front | What is a circulatory system? |
|---|---|
| Back | A system that uses blood vessels with pumps and valves that ensures one way flow of blood. |
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