The rhythmic contraction and relaxation of the heart muscles is called heartbeat.

False

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True

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Solution

The correct option is B True

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Similar questions

The rhythmic contraction and relaxation of the heart muscles is initiated by a tissue called ______________.

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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