Heart Sounds & Beats
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8 Terms
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What is “Lup-dup”?
sounds of valves closing
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What is the first sound of “Lub” doing?
The AV valves closing - ventricular contraction
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What is the second sound of “dup” doing?
The Semilunar valves closing - atrial contraction
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How many beats per minute at rest?
70-80
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What are the stage of Heartbeat when ventricles contract & expand?
Systole & Diastole
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Systole
contraction of a heart chamber (120 mmHg)
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Diastole
expansion (relaxing & filling with blood) of a heart chamber (80 mmHg)
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mmHg
millimeters of mercury; the unit used to measure blood pressure
Note 
Flashcards (46)