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Whole Skull
Question | Answer |
---|---|
Calotte | top part of neurocranium (usually cut away to reveal endocranium) |
Calvarium (neurocranium) | cranium without the face (braincase) |
Face (splanchnocranium) | facial skeleton |
Orbits | eye sockets |
Anterior nasal aperture (piriform aperture) | the hole between and below the orbits (nose hole) |
Posterior nasal aperture | in back of throat? |
Zygomatic arch | thin, bony bridges at the sides of the skull |
Temporal fossa | holes in temporal lobe (big holes behind the zygomatic arch)muscle for chewing basses through here to attach to mandible |
External auditory meatus | ear holes |
Mastoid process | attachment side for many muscles of headprojection next to external auditory meatus |
Coronal suture | “crown” suture |
Frontal eminences (frontal tubers, bosses) | bumps on frontal lobe |
Sagittal suture | looks like arrowsuture which divides parietal bones |
Parietal eminences (parietal tubers, bosses) | where bone began to ossify on parietal bones |
Squamosal suture | “plate”unlike other suturesno interdigitationbeveled edge |
Lambdoidal suture | suture at back between parietal and occipital |
Lambdoidal ossicle (Wormian bone) | wormian bones are irregular ossicles occurring along sutures |
Foramen lacerum | “lacy” marginnot true foramenformed by architecture of occipital, sphenoid, temporal bone |
Foramen magnum | large oval hole in the base of the skull |
Anterior cranial fossa | front fossa on endocranial surface of skull (looking into skull) |
Middle cranial fossa | middle fossa on endocranial surface of skull (looking into skull) |
Posterior cranial fossa | back fossa on endocranial surface of skull (looking into skull) |
Sinuses (frontal, ethmoidal, maxillary, sphenoidal) | look for these sinuses |