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The muscular sheet below the lungs that drives breathing is the:

ADialysis
BDiameter
CDiaphragm
DDiagram
Answer & Solution
Correct answer: C. Diaphragm
1. It marks the floor of the chest cavity. 2. Its movement pulls air in. 3. That sheet is the diaphragm. _Source: OpenStax Biology 2e, Chapter 39, The Respiratory System._
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