Skull Internal Bones - AR220 Skull Internal Bones Internal Bones Vomer Ethmoid Sphenoid Lacrimals(2 Palate bones(2 Aduitory ossicles(3 x 2 = 6 Inferior

Skull Internal Bones - AR220 Skull Internal Bones Internal...

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AR220 Skull: Internal Bones Internal Bones: Vomer Ethmoid Sphenoid Lacrimals (2) Palate bones (2) Aduitory ossicles (3 x 2 = 6) Inferior nasal conchae (2) Sutures Include Spheno-frontal: sphenoid articulates with frontal Spheno-parietal: sphenoid articulates with parietal Spheno-squasmosal: sphenoid articulates with temporal Major Landmarks Pterion o Where parietal, sphenoid and temporal all come together Nasal septum o Nasal aperture is divided in half by the septum Features of the sphenoid Lesser wing o Thin lateral plates o Expands into greater wings Anterior clinoid process o Bony projection in front of lesser wing Optic foramen
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o Underneath processes, underneath lesser wings o Cross over to cause groove Chiasmatic groove o Optic nerve spot Pituitary fossa o Houses pituitary gland o In front of chiasmatic groove o Also called hypophyseal Posterior clinoid process o Opposite side of chiasmatic groove and pituitary foss
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  • Winter '15
  • Dr.BonnieGlencross
  • Bones of the head and neck, nasal septum, Inferior nasal conchae, nasal aperture, chiasmatic groove, sphenoid articulates

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