Cranium: Frontal Flashcards
Frontal Squama
The vertical frontal squama forms the forehead.
Horizontal Portion
The horizontal portion acts to roof the orbits and to floor the frontal lobes of the brain.
Frontal Eminence
Dominate the ectocranial surface.
Temporal lines
On the lateral ectocranial surface. Becomes a crest in its anterior, lateral extent. Often divides into superior and inferior lines as it sweeps posteriorly.
Zygomatic processes
Form the most lateral and anterior corners of the frontal.
Superciliary Arches
Bony tori over the orbits.
Supraorbital Margins
The upper orbital edges. Notched or pierced by the Supra orbital notch or foramen.
Supraorbital notch (foramina)
Set along the medial half of the superior orbital rim.
Metopic Suture
Vertical suture between right and left frontal halves.
Meningeal grooves
Present on both sides of the concave endocranial surface of the frontal squama.
Sagital sulcus
A vertical groove that runs down the midline of the endocranial surface. It lodges the superior sagital sinus.
Foramen cecum
At the root or base of the frontal crest. Transmits a small vein from the frontal sinus to the superiors sagital sinus.
Orbital plane
Horizontal portions of the frontal.
Lacrimal Fossae
Found at the lateral, inferior parts of the orbital surfaces of frontal.
Ethmoid notch
The gap spectating the two orbital planes of the frontal.
