Which statement(s)about the functions of the paranasal sinuses is/are not true?
A)They provide an extensive area of mucous epithelium.
B)They make skull bones lighter.
C)The mucus they secrete enters the oral cavities.
D)They support cilia that move the mucus.
E)All of the answers are correct.

Question

Quizplus · Accepted Answer

The mucus secreted by the paranasal sinuses drains into the nasal cavities, not the oral cavities.

Which Statement(s)about the Functions of the Paranasal Sinuses Is/are Not