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Get Answers to all your Questions
Expiration occurs due to
Option: 1
Relaxation of diaphragm and external intercostal muscle
Option: 2
Contraction of internal intercostal muscles and diaphragm
Option: 3
Relaxation of abdominal and internal intercostal muscles
Option: 4
Contraction of diaphragm and relaxation of abdominal muscles
Answers (1)
Mechanism of Expiration -
This leads to an increase in intra-pulmonary pressure to slightly above the atmospheric pressure causing the expulsion of air from the lungs.
- wherein
This causes expiration
Correct option is 1
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