skull oestoelogy Flashcards
neurocranium can be split into
membranous neurocranium- flat bones- frontal
cartilaginous neurocranium- supportive- sphenoid/ethmoid
membranous and cartilaginous ossification
membranous- intramembranous
cartilaginous - endochondral
names of the sutures
front- coronal
middle- sagittal
side- squamous
back-lamdboid
connecting points of the sutures
front- bregma
back- lambda
where is pituitary gland found
sphenoid bone - sella turcia
pointy bit as back of the head
external occipital protuberance
the differences between the - palatine process of maxilla and palatine process of palatine bone
palatine process of maxilla further front to teeth
palatine process pf palatine bone - further back further from teeth
parietal eminence
side of skull
design features of the skull
lightweight- hollow cavities and dipole
strength- le fort fractures, buttress system, sutures, orbital rims
how babies head helps in birthing process
mould for birth canals- wide sutures, fontanelles, no development of nose or jaw
dipole explain
3 layers- thick, mesh, thick
if outer gets fractured then inside protected
ossification - intramembranous
maxilla and mandible strength …
maxilla- thin and weak- dissipate into upper
mandible - strong and can absorb a lot of force
buttress system
3 strengthened areas
frontonasal
zygomatic
pterygoid
le fort fractures
I-alveolar process of maxilla
II-maxilla separated from facial skeleton
III-upper facial skeleton separated from lower
impacted wisdom teeth can affect what?
weaken the angle of the mandible
