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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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9 years ago
When the diaphragm contracts, it
A) becomes more dome-shaped.
B) opens a hole in its center through which air flows.
C) becomes flatter.
D) aids in expiration.
Textbook 
Human Anatomy

Human Anatomy


Edition: 7th
Authors:
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WideEyesWideEyes
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snowhite Author
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9 years ago
I really appreciate your help!
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9 years ago
My pleasure Slight Smile
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