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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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Edwindsor Edwindsor
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8 years ago
Normal heart sounds are caused by which of the following events?
A) excitation of the SA node
B) friction of blood against the chamber walls
C) opening and closing of the heart valves
D) closure of the heart valves
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Anatomy & Physiology

Anatomy & Physiology


Edition: 5th
Authors:
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- Eddy
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ancraancra
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8 years ago
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Edwindsor Author
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#2
8 years ago
You gave me the correct answer, thank you.
- Eddy
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#3
8 years ago
You're welcome Happy Dummy
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