The paranasal sinuses function in
A) contributing to the floor of the cranium.
B) deflecting inhaled air toward the olfactory receptors located near the upper portions of the nasal cavity.
C) supporting and stabilizing the position of the larynx.
D) forming the floor and medial portion of the rim of the orbit.
E) lightening the skull and providing an extensive area of mucous epithelium.

Question

Quizplus · Accepted Answer

The paranasal sinuses are air-filled cavities within the skull bones that serve to lighten the skull and provide an extensive area of mucous epithelium. They are lined with respiratory mucosa, which produces mucus to moisten and warm inhaled air as well as trap foreign particles. The sinuses also contribute to the resonance of the voice.

The Paranasal Sinuses Function in