The rhythmic contraction and relaxation of heart muscles makes a

Heart cycle

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Heart rate

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Heart beat

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None of the above

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Solution

The correct option is C Heart beat
Heartbeat is rhythmic contraction and relaxation of heart muscles is called a heartbeat. Heart rate is the speed of the heartbeat measured by a number of contraction of the heart per minute.
Thus the correct answer is C.

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Similar questions

The rhythmic contraction and relaxation of heart muscles is known as ________.

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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