Skull Flashcards
2 divisions of the skull
neurocranium (surrounding brain)
viscerocranium (facial skeleton)
What can cause widening of the diploic space?
sickle cell disease thalassemia iron deficiency anemia renal osteodystrophy hyperarthyroidism
Pagets disease
increased head size, thickening of the skull bones particularly of the frontal bone.
The skull develops from both …. ossification and … ossification.
intramembranous
endochondral
Most of the base of the skull is pre-formed in cartilage including most of the … and … bones.
sphenoid
occipital
Anterior fontanelle in a newborn’s skull generally closes at … months of age while the posterior fontanelle closes at …
18-24 months
9 months
Craniosynostosis …
premature closure of the sutures that leads to deformities of the head and inhibit proper brain development
Parietal bones articulate with each other at …
sagittal suture
Parietal bones articulate with occipital bone at the
lambdoid suture
Temporal bones (6)
squamous petrous mastoid zygomatic tympanic styloid
Petrous part is a wedge between … and … bones and encloses the internal ear.
sphenoid and occipital
Pterygoid canal houses …
nerve, artery and vein of pterygoid canal
sphenopalatine foramen houses…
nasal and nasopalantine nerves, sphenopalatine vessels
foramen rotundum houses…
maxillary nerve
foramen ovale houses…
mandibular nerve and lesser superficial petrosal nerve
foramen spinosum houses..
middle meningeal artery and vein, recurrent branch of mandibular nerve
foramen lacerum houses…
internal carotid artery, carotid sympathetic and venous plexus, petrosal nerve
optic foramen houses…
optic nerve and ophthalmic artery
superior orbital fissure houses…
oculomotor nerve, trochlear nerve, frontal and lacrimal nerves, abducent nerve, and superior ophthalmic vein.
inferior orbital fissure houses…
maxillary and zygomatic nerves, infraorbital vessles
Ethmoid bone is a single midline bone which helps form the …
anterior cranial cavity, medial wall of the orbit and nasal cavity
The crista galli is an extension of the .. and attaches to the falx cerebri.
ethmoid
Cribriform plate houses
olfactory nerves, anterior and posterior ethmoid nerve, arteries and veins
