Bone
Frontal bone
Forehead and orbital roofs
High-yield
Forms the anterior cranial fossa floor and orbital roofs; contains the frontal air sinus.
Overview
A flat cranial bone forming the forehead, the roofs of the orbits, and part of the anterior cranial fossa, containing the frontal sinuses.
Reference facts
- Bone type
Flat
- Key landmarks
Squamous (forehead) part; Supraorbital margins and notches/foramina; Glabella; Frontal sinuses; Orbital plates
- Articulations
Parietal bones (coronal suture); Sphenoid; Ethmoid; Nasal, lacrimal, maxilla, zygomatic bones