Question

should be brainly answers.

what do you mean by a heart beat ? how this beat is originated in heart ?

................ thanks ,,,,,,,,,,,,,,,,,,,,,,

Answer 1

Hello friend

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=> heart pumps blood throughout the life the pumping mechanism involved regular contraction and relaxation of heart Chambers one systole and one diastole of each chamber constitute one heart beat so, heart beating is a vital life process, which causes the contraction and relaxation of heart Chambers.

Heartbeat is due to rhythmic contraction and relaxation of heart muscles normal rate at which heart beats is 72 times per minute during exercise and heavy work, this rate becomes increased the Heartbeat is originated by a muscular node, which is located at the apex of right auricle the node is called as a node it is also known as Natural pacemaker

s a node transmit signals another node called as AV node which interprets the signal to the muscles of heart and finally results in their contractions.

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I hope it will help you

Thanks

@drsm