Define: Heartbeat and heart rate

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Solution

Heartbeat is defined as rhythmic contraction and relaxation of heart muscles.This happens from birth till death.

Heart rate is the number of heartbeats per minute.

A healthy adult has an average heart rate of 70 to 80 beats per minute.

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Define heartbeat

The initiation of the contraction and relaxation of the heart and regulation of the heartbeat rate are carried out by the special muscles of ___.

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