stages of a heart beat?

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stages of a heart beat?

what are the 4 stages of a heartbeat?

2007-03-26 11:58:50 · 2 answers · asked by ang3may 1 in Science & Mathematics ➔ Biology

2 answers

The cardiac cycle?

(1) Isovolumetric contraction
(2) Ejection
(3) Isovolumetric relaxation
(4) Diastolic filling

2007-03-26 12:26:01 · answer #1 · answered by Orinoco 7 · 0⤊ 0⤋

If you mean a heart contraction cycle, then the person above is right. But as far as the actual sound of a heart beat, that's only two events. The first sound comes from the valves between your atria and your ventricles closing. The second sound comes from the valves between your arteries and ventricles closing.

2007-03-27 03:53:03 · answer #2 · answered by Yarrrr 2 · 0⤊ 0⤋