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Skeleton of Head and NeckAnatomical Position:Reid’s base line (Frankfurt plane)Horizontal line joininginfraorbital marginwithupper margin of external acoustic meatusSkeleton of HeadAll bones in head are united at immobile joints calledsutures(primary cartilaginous joint)except thetemporomandibular joint(condylar synovial)Skull bones are composed ofouter table(compact bone) and a thinnerinner table(compactbone) separated by thediploe(spongy bone)oBoth the inner and outer surfaces are covered inperiosteumBones of Cranium:o2 arepaired: parietal + temporal; the rest aresingleFacial bones(viscerocranium):o2 aresingle: mandible + vomer; the rest arepairedExterior views of SkullNorma verticalis: viewed from aboveoBones:frontal, parietal, occipitaloSutures: coronal, sagittal, lambdoidMetopic suture (occasionally)oOther: vertex, bregma, lambda, parietal tuber, parietalforamen, obelionNorma frontalis: viewed from frontoBones: frontal, nasal, zygomatic, maxilla, mandibleoFrontal region: superciliary arch, glabella, nasionoOrbital openingsSuperior margin: frontal bone, supraorbital notches(foramina)Medial margin: frontal, maxilla, lacrimalInferior margin: zygomatic, maxillaLateral margin: zygomatic, frontaloAnterior aperture of nose: bounded by nasal bone + nasal notch ofbody of maxillaoMaxilla: nasal notch, anterior nasal spine, infraorbital foramenProcesses: frontal, alveolar + zygomatic processesoZygomatic: zygomaticofacial + zygomaticotemporal foraminaoMandible:Outer: ramus (coronoid process, mandibular notch, condylarprocess – head + neck), angle, body (mental foramen,mental tubercle + protuberance)Mental foramen– inferior alveolar nerveInner: mylohyoid line, submandibular fossa, sublingual

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Term
Fall
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Tags
Bones of the head and neck, frontal bone, Posterior cranial fossa, Pterygopalatine fossa, anterior cranial fossa, middle cranial fossa

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