Multiple Choice
Why does air rush into the lungs during an inhale or inspiration?
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10. The Respiratory System
Ventilation
Multiple Choice
During expiration, which action contributes to the movement of air out of the lungs during eupnea, or quiet breathing?
A
Contraction of intercostal muscles.
B
Relaxation of the diaphragm.
C
Contraction of the abdominal muscles.
D
Expansion of the ribcage.
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