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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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snowhite snowhite
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8 years ago
If the beating heart makes a "lub-dup" sound, the "dup" sound is caused by
A) the large force of the contracting ventricles.
B) the apex of the heart hitting the anterior chest wall.
C) a stenotic atrioventricular valve.
D) vibrations that result from the semilunar valves slamming shut.
Textbook 
Human Anatomy

Human Anatomy


Edition: 7th
Authors:
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WideEyesWideEyes
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