Biology · Human Physiology
Select the INCORRECT statement regarding human respiration mechanics from the following options:
- 1Contraction of abdominal muscles and internal intercostal muscles occurs during forceful expiration.
- 2Abdominal muscles play an active role in normal quiet inspiration.✓
- 3The diaphragm relaxes and internal intercostal muscles can contract during active expiration.
- 4The diaphragm and external intercostal muscles contract during quiet inspiration.
Correct answer
Abdominal muscles play an active role in normal quiet inspiration.
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