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Questions and Answers
What causes expansion of the lungs during inspiration?
What causes expansion of the lungs during inspiration?
- Contraction of the abdominal muscles
- Contraction of the diaphragm (correct)
- Relaxation of the diaphragm
- Elastic recoil of the lungs
What causes compression of the lungs during expiration?
What causes compression of the lungs during expiration?
- Contraction of the diaphragm
- Elastic recoil of the lungs
- Relaxation of the diaphragm (correct)
- Contraction of the abdominal muscles
What primarily achieves the extra force for rapid expiration?
What primarily achieves the extra force for rapid expiration?
- Contraction of the diaphragm
- Elastic recoil of the lungs
- Contraction of the abdominal muscles (correct)
- Expansion of the thoracic cavity
What is accomplished with the diaphragm during normal quiet breathing?
What is accomplished with the diaphragm during normal quiet breathing?
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What causes the ribs to project almost directly forward and the sternum to move forward and away from the spine?
What causes the ribs to project almost directly forward and the sternum to move forward and away from the spine?
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