Question
Give reasons : Heart is called a pump.
✓
Answer
- The heart acts as a pumping organ. It shows continuous pumping action.
- The rhythmic contraction or systole and relaxation or diastole of heart forms one heartbeat.
- Such heartbeats occur about 72 times per minute.
- The heart efficiently pumps about 5 litres of blood per minute. Therefore, the heart is called a pump.
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