Which of the following is NOT true of the diaphragm?

A. It is innervated by the phrenic nerves.
B. It is considered to be the prime mover for inspiration.
C. When it contracts, it compresses the thorax and decreases its volume.
D. Its action is to flatten during inspiration.
E. All of these are true of the diaphragm.


Answer: C

Anatomy & Physiology

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