MCAT Question of the Day
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    Q:

    		 Which of the following correctly describes the state of the thoracic cavity and the air pressure in the lungs upon contraction of the intercostal muscles and diaphragm?
    		 

    A

    		 The thoracic cavity expands and the air pressure in the lung increases

    B

    		 The thoracic cavity expands and the air pressure in the lung decreases

    C

    		 The thoracic cavity contracts and the air pressure in the lung increases

    D

    		 The thoracic cavity contracts and the air pressure in the lung decreases



    Respiratory System |
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