Social Sciences, asked by IoveIyDay, 4 months ago

what is heartbeats??

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Answered by Anonymous

A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract.

Answered by namahbhala

Answer:

the pulsation of the heart

Explanation:

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what is heartbeats??​

Answers

what is heartbeats??