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3 April, 22:23

What happens when the lungs recoil?

a. Ribs and diaphragm muscles contract.

b. Expiration occurs.

c. Inspiration occurs.

d. Internal respiration occurs.

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  1. 3 April, 22:42
    0
    B. Expiration occurs, when the lungs contract / recoil, air rushes out which allows you to breathe out
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