Multiple Choice
Which statement(s) about the functions of the paranasal sinuses is/are true?
A) They provide an extensive area of mucous epithelium.
B) They make skull bones lighter.
C) The mucus they secrete enters the nasal cavities.
D) They support cilia that move the mucus.
E) All of the answers are correct.
Correct Answer:
Verified
Correct Answer:
Verified
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