Question
Heartbeat.
✓
Answer
- The rhythmic contraction and relaxation of the heart is called heartbeat.
- Each heartbeat includes one systole and one diastole. During systole the heart contracts and during diastole it relaxes.
- The rate with which the heart beats is called heart rate. The normal heart rate is 72 beats per minute.
- Tachycardia means faster heart rate of about more than 100 beats per minute.
- Bradycardia means slower heart rate that is below 60 beats per minute.
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