A. intercostal muscles contract
B. Ribs move forward
C. Thoracic cavity increases
D. Diaphragm relaxes
E. Internal air pressure decreases
Correct Answer:
Option D – Diaphragm relaxes
A. intercostal muscles contract
B. Ribs move forward
C. Thoracic cavity increases
D. Diaphragm relaxes
E. Internal air pressure decreases
Correct Answer:
Option D – Diaphragm relaxes
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