Increasing the Size of the Thoracic Cavity Through Contraction of the Diaphragm

question 21

Multiple Choice

Increasing the size of the thoracic cavity through contraction of the diaphragm and rib muscles causes

• A) an inhalation.
• B) an exhalation.
• C) coughing.
• D) positive pressure in the lungs.
• E) swallowing.

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