Why does the first heart sound occur after the qrs complex?.

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asked Sep 1, 2023 58.7k views

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YoryeNathan · Answer 1 · 2023-09-05T19:32:36+0000

Answer:

QRS represents ventricular depolarization. This depolarization initiates ventricular contraction which closes the mitral and tricuspid valves. It is the closure that is heard as the first heart sound.

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Why does the first heart sound occur after the qrs complex?.

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