Certain Cranial Bones Contain _______, Air-Filled Spaces Lined with Mucous

Question

Certain cranial bones contain _______, air-filled spaces lined with mucous membranes.
A) facets
B) sutures
C) sinuses
D) fossae

Accepted Answer

The air-filled spaces lined with mucous membranes in certain cranial bones are called sinuses. Facets are smooth, flat surfaces where bones come into contact with each other, sutures are immovable joints between two cranial bones, and fossae are shallow depressions or grooves in bones.