2: Skull Anatomy Flashcards
8 cranial bones
- Parietal x2
- Temporal x2
- Frontal
- Occipital
- Sphenoid
- Ethmoid
14 facial bones
- Zygomaticus x2
- Lacrimal x2
- Nasal x2
- Palatine x2
- Maxillae x2
- Inferior nasal conchae x2
- Vomer
- Mandible
Metopic suture
Suture down midline of frontal bone, present if the two frontal bones don’t completely fuse
Frontal crest of frontal bone + what attaches to it
Separates two sides of neocortex; attachment for falx cerebri
Petrous portion of temporal bone: function
Protects inner ear
What bone is the foramen magnum in?
Occipital bone
What movement is allowed by the occipital condyles?
Nodding the head yes
Three grooves in the internal portion of the occipital bone
Groove for: superior sagittal sinus, transverse sinus, sigmoid sinus
Superior vs posterior aspect of sphenoid: what they look like
Superior: Batman
Posterior: butterfly
What sits in the sella turcica?
Pituitary gland
What exits from the foramen rotundum?
Maxillary branch of Trigeminal (V2)
What exits through foramen ovale?
CN V3
What exits through the foramen spinosum
Middle meningeal A
Articulations of the sphenoid bone
With almost every other bone in the skull
What attaches to the crista galli of the ethmoid?
Falx cerebri
What makes up the superior portion of the nasal septum?
Perpendicular plate of the ethmoid bone
What forms the superior and middle nasal conchae?
Ethmoidal labyrinth