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located on both sides of the foramen magnum, provide articulation with the first cervical vertebra; part of the occipital bone
squamous part ( of the temporal bone)
is thin and flat and forms the anterior and upper part of the temporal bone
zygoma (or zygomatic process)
a long arched process that projects forward from the lower portion of the squamous part of the temporal bone
conical protuberance of the petromastoid portion of the temporal bone that is situated behind the ear and serves as a site of muscle attachment
between the occipital bone and the sphenoid, this is part of the petromastoid part of the temporal bone
curved plate lying below the squamous part and in front of the mastoid process, this contains the external acoustic meatus; part of the temporal bone
projects downwards and forwards from the underside of the temporal bone; one of the four "parts" of the temporal bone
The Four Parts of the Temporal Bones
squamous part, petromastoid part, tympanic part, styloid process
a small horizontal plate perforated by many fine openings, or foramina, for the passage of the olfactory nerves; part of the ethmoid bone
descends from the cribriform plate and forms the upper part of the nasal septum; part of the ehtmoid bone
two of them, each consisting of many thin-walled ethmoidal air cells that communicate with the nasal cavity. Part of the ethmoid bone
superior and middle nasal conchae
two thin plates of bone that jut out into the nasal cavities from the spongy labyrinths of the ethmoid bone
The Three Parts of the Ethmoid Bone
cribriform plate, perpendicular plate, labyrinths (of which there are two total)
in front of the temporal bones at the base of the skull, shaped like a bat with outstretched wings
inferior nasal conchae
curved plates of bone that lie in the walls of the nasal cavity, below the superior and middle nasal conchae of the ethmoid bone
smallest and most fragile of the cranial bones, form part of the walls of the orbits.
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