Multiple Choice
Cartilaginous rings
A) make the trachea rigid to keep the airway open.
B) make the primary bronchi rigid to keep them open.
C) are C shaped in the trachea to allow the esophagus to expand behind it.
D) are made of hyaline cartilage.
E) all of the choices are correct.
Correct Answer:
Verified
Correct Answer:
Verified
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