Heartbeat: The sounds you hear are the closing of the valves in the heart. Hope this helps.
Answered 5/12/2015
2.8k views
Heart Beat: 1 complete pulsation of the heart, to include 1 systole and 1 diastole.
Answered 5/13/2015
2.8k views
3 doctors weighed in across 2 answers
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