Feb '18
25
MCAT Question of the Day | MCAT Course


  • Q:

    Which of the following occurs during expiration?

     

    A

    increase of air pressure in the lung relative to the environment

    B

    contraction of the diaphragm

    C

    contraction of external intercostal muscles

    D

    increase in volume of the thoracic cavity




    Tags: Respiratory System | Suggest a tag
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