Biology question?

During inhalation which of the following occurs

A. a positive pressure is created in the thoracic cavity

B. diaphragm contracts and arches upward

C. abdominal muscles contract

D. none of these are correct

2 Answers

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  • tony
    Lv 7
    2 years ago
    Favourite answer

    at its resting position, the diaphragm is dome shaped, and when it contracts, it moves downwards causing a "flattening" of the dome.Inhalation is the process of taking air into the lungs. For this to occur, the air pressure inside the lungs must be lower than that of the external atmosphere as air flows from areas of higher pressure to lower pressure.

    Source(s): d
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  • 2 years ago

    So inhale and notice what happens to you.

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