Which of the following is True about paranasal sinuses?
A) Paranasal sinuses open into the oral cavity.
B) Paranasal sinuses enhance the resonance of the voice and lighten the skull.
C) Paranasal sinuses contain passages acting as one-way valves.
D) Paranasal sinuses are found in maxillary, ethmoid, and lacrimal bones.

Question

Quizplus · Accepted Answer

Paranasal sinuses enhance the resonance of the voice and lighten the skull. They do not open into the oral cavity (A), nor do they contain passages acting as one-way valves (C). Finally, paranasal sinuses are found in maxillary, ethmoid, sphenoid, and frontal bones, not the lacrimal bone (D).

Which of the Following Is True About Paranasal Sinuses