skull oestoelogy Flashcards
(16 cards)
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
crumple zones
these prevent more serious fractures
on the mandible
around the body, angle and ramus
