Which of the following is a characteristic of the paranasal sinuses?
A) None of the listed responses is correct.
B) They open into the oral cavity.
C) They are found in the maxillary, ethmoid, and lacrimal bones.
D) They lighten the skull.

Question

Quizplus · Accepted Answer

The paranasal sinuses are air-filled spaces found in the maxillary, ethmoid, frontal, and sphenoid bones of the skull. One of their main functions is to lighten the weight of the skull, making it easier for us to hold our heads upright. Therefore, D is the correct answer as it correctly identifies one of the characteristics of the paranasal sinuses.

Which of the Following Is a Characteristic of the Paranasal