Multiple Choice
The figure below shows that ________. 
A) peristalsis moves food down the esophagus
B) air cannot get into the trachea when the epiglottis closes the trachea
C) the trachea is open when you are not swallowing
D) the trachea is closed when you are not swallowing
Correct Answer:
Verified
Correct Answer:
Verified
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