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Skull I. Neuro cranium II. Viscero cranium

Skull I. Neuro cranium II. Viscero cranium. I. Neurocranium. Fossa cranii caudalis Tentorium cerebelli osseum Fossa cranii medii Crista orbitosphenoidalis Fossa cranii rostralis. Fossa cranii caudalis inner (cerebellar) surface. ventrally: Impressio medullaris – sagittal

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Skull I. Neuro cranium II. Viscero cranium

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  1. SkullI. NeurocraniumII. Viscerocranium

  2. I. Neurocranium • Fossa cranii caudalis Tentorium cerebelli osseum • Fossa cranii medii Crista orbitosphenoidalis • Fossa cranii rostralis

  3. Fossa cranii caudalisinner (cerebellar) surface ventrally: • Impressio medullaris – sagittal medulla oblongata (brain - spinal cord) • Impressio pontina – transverse pons – bridge dorsally: • Impressio vermialis - sagittal cerebellar vermis tentorium cerebelli osseum

  4. Fossa cranii media med.  lat. • fossa hypophysealis (sella turcica) • sulcus nervi ophthalmici (med.) • sulcus nervi maxillaris (lat.) spina ossis sphenoidalis • fossa piriformis • impressiones digitatae (imp. gyrorum) rostr., median: sulcus chiasmatis (sulcus nervi optici)

  5. Fossa cranii rostralis caud.: crista orbitosphenoidalis rostr.: lamina cribrosa / nasal cavity 2x fossa ethmoidalis (olfactory bulb), for. ethmoidale impressiones digitatae (imp. gyrorum) rostrum (ossis sphen.), crista galli, crista sagittalis interna

  6. dors.  ventr. Ru+ Sus: For. orbitorotundum Eq: For. alare parvum – dorsally Ca: 2x For. ethmoidale

  7. Os temporale: squama ossis temporale os petrosum Os petrosum: pars tympanica pars petrosa pars mastoidea proc. muscularis (thin, needle-like) proc. styloideus (for the hyoide bone) (not in Ca, Sus)

  8. orientation on petrosal bone: lat.: porus acusticus externus pars mastoidea situated laterally rostroventrally directed: proc. muscularis proc. styloideus

  9. os petrosum, med. aspect porus acusticus internus  meatus  fundus (4 openings) rostrodors.: area n. facialis (introitus canalis n. VII.) rostroventr.: area cochleae caudodors.: for. vestibulare dors. caudoventr.: for. vestibulare ventr. caud., dors.: apertura externa aquaeductus vestibuli caud. ventr.: apertura externa canaliculi cochleae rostr., dors.: fovea ganglii semilunaris = fov. ganglii nervi trigemini

  10. skull, ventral surface • for. magnum • for. nervi hypoglossi • for. jugulare (= for. lacerum aborale) • Eq.: for. lacerum (orale) med.: incisura carotica (lat. + med.?) inc. ovale lat.: inc. spinosa • for. alare caudale • for. retroarticulare • for. stylomastoideum

  11. II. Viscerocranium • meatus nasi dors.  lamina cribrosa ( olfactory bulb) • meatus nasi medius  sinus paranasales (eq – 1 system) • meatus nasi ventr.  pharynx ( larynx trachea) • meatus nasi communis (next to septum nasi) Orbit fossa sacci lacrimalis (rostr. nasal cavity) fossa glandulae lacrimalis (“lat.”, but within the orbit) fossa musculi obliqui ventr. (medioventr.) fovea trochlearis (mediodors., for m. obliquus dors.) Ca, Sus: ligamentum orbitale

  12. Arcus zygomaticus Os temporale, proc. zygomaticus Os zygomaticum, proc. temporale Os frontale, proc. zygomaticus Ca, Sus: Lig. orbitale

  13. fossa pterygopalatina caud.  rostr.

  14. palatum durum (hard palate) os palatinum, lamina horizontalis maxilla, proc. palatinus os incisivum, proc. palatinus • margo interalveolaris (= diastema) • septa interaleveolaria • septa intraalveolaria (= interradicularia) rostr.: foramen interincisiva (Ca, Eq) fissura interincisiva (Ru, Sus)

  15. Mandibula lat.: fossa masseterica, rostr.: for. mentale med.: fossa pterygoidea, caud.: for. mandibulae facies lingualis / fac. labialis + fac. buccalis interspec. diff.: margo ventr. – shape angulus mandibulae Eq: tuberositas musculi sternomandibularis Ca: proc. angularis (caudovetr.)

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