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Using the terms diastole and systole, discuss the cardiac cycle and explain the "lub-dub" sound heard when taking blood pressure as they pertain to what is occurring in the heart. (Thanks for helping explain)

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ReinaThePanPanda

Answer:

Normal heart sounds come in pairs. The sounds are often described as a constant lub-dub, lub-dub. The first lub-dub is the sound of the mitral and tricuspid valves closing. The second lub-dub is the sound of the aortic and pulmonary valves closing soon after.

Explanation:

I think this is right. It's been a while.