Skull Flashcards
Cranium bones
6
Frontal
Parietal
Temporal
Occipital
Sphenoid
Ethmoid
Facial bones
8
Maxillae
Zygomatic
Nasal
Lacrimal
Vomer
Palatine
Inferior conchae
Mandible
What are the sutures of the skull
Saggital - where the parietal bones articulate medialy
Lambdoid - where the parietal bones articulate with the occipital bone
What is the pterion
Thinnest area of lateral skull
Between parietal bone and greater wing of sphenoid
Bony housing for anterior division of MMA and MMV
Communications of the pterygopalatine fossa
LAteral - infratemporal fossa through pterygomaxillary fissure
Medial - nasal cavity through the sphenopalatine foramen
Superior - skull through foramen rotundum
Anteriorly - orbit - through inferior orbital fissure
What does the pterygopalatine fossa contain?
Pterygopalatine ganglion
Second branch of maxillary nerve
Nerve of pterygoid canal (from facial nerve) - parasympathetics
Terminal third of maxillary artery
What forms the anterior and posterior hard palate
Anteiror - maxillae
Posterior - palatine boneW
What forms the zygomatic arch
Zygoma articulates medially with maxilla and laterally with zygomatic processes of temporal bone
What do zygoma formaina contain?
Zygomaticofacial nerve
Zygomaticotemporal nerve
Sutures of the skull
Coronal and saggital join at the bregma
Saggital and lambdoid join at the lambda
What forms the base of the skull?
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa
What does the anterior cranial fossa contain?
Floor?
Frontal lobes
Floor = cribriform plates of ethmoid
Where does the falx cerebri attach? What runs through it?
Crista galli of the ethmoid bone anteriorly and broad posterior end to the upper surface of tentorium cerebella
Superior saggital sinus and inferior saggital sinus runs through it
What is the tentorium cerebelli
Fold of dura mater over the upper surface of teh cerebellum
What is the falx cerebelli
Small fold of dura passing through cerebellar hemispheres
