39 terms

skull bones bio 171

STUDY
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frontal bone
most anterior bone
nasal bone
often broken after a blow to the nose
supraorbital foramen
hole superior to orbit
orbit
structure that contains eyeball
zygomatic bone
cheek bone
infrorbital foramen
small hole superior to orbit
vomer
facial bone that forms the nasal septum.
maxilla
upper jaw bone
mandible
lower jaw bone
nasal conchae
structure that seperate the nasal cavity into 3 compartments
inferior orbital fissure
opening allows passage of several nerves
superior orbital fissure
opening allows passage of several nerves and veins
optical foramen
opening receives the nerve for vision
zygomatic process
structure connects the temporal and zygomatic bone
spheniod bone
butterfly-shaped bone; touches all bones in cranium
foramen lacerum
not a true foramen because nothing passes through the hole
foramen ovale
nerves and blood vessels pass through this opening
foramen spinosum
smallest of the holes- can be absent in 2% of population
internal auditory canal
opening carries the nerve for hearing from the inner ear to the brain
foramen magnum
bigget "hole" in skull; dividing line between brain and spinal cord
parietal
most superior bone
coronal suture
suture that runs in a frontal plane
squamosal suture
means flat
lambdoidal suture
greek letter for "lambda"
occipital bone
most posterior bone
temporal bone
has a lateral squamous (flat) part and a medial petrous (thick part)
lacrimal bone
facial bone contains a duct to drain tears from eye
ethmoid bone
irregularly shaped bone located between the eye orbits
mastoid process
round projection on the temporal bone behind the ear
external auditory canal
hollow; provides a passageway for sound-waves to enter the ear
coronoid process
articulates mandible with temporal bones
body of mandible
teeth located here
mental foramen
chin hole
sagittal suture
line that seperates skull into left and right sides
angle of mandible
corner of the lower jaw beneath the earlobe; used to determine gender identification
ramus of mandible
branch of mandible that turns upward to joint of the jaw
mandibular foramen
blood vessels and nerves for the interior teeth pass through this hole
mandibular notch
u-shaped depression allows blood vessels and nerves to pass
mandibular condyle
smooth structure is part of he temporomandibular joint (tmj); bone at the end of the jaw near the ear