Paranasal Sinuses ________

Question

Paranasal sinuses ________.
A) produce mucus
B) act as extensions of and open into the nasal cavities
C) resonate during sound production
D) lighten skull bones
E) All of the answers are correct.

Accepted Answer

All of the statements are correct. Paranasal sinuses produce mucus, act as extensions of and open into nasal cavities, resonate during sound production, and lighten the skull bones.