2. Os sphenoidale 나비뼈, 접형골

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Forms fossa crannii medii et rostral, it consist of os basisphenoidale  / presphenoid bone

 

https://www.slideserve.com/fawzia/osteology

 

os basisphenoid

 

corpus: body, median part of os basisphenoidale

sella tunica: dorsal part of the body

-fossa hypophysialis: central depression in sella for hypophysis

- dorsum sella(no Eq): caudal wall of the fossa hypophysials

-proc. clinoideus caudalis: process on each side of dorsum sellae

sulcus caroticus(Eq,Ca): groove for a. carotis interna

 

ala: wing, lateral part of os basisphtenoid

for rotundum(Eq, Ca) : round foramen for N. maxillaris / In Bo, Su = for. orbitorotundum

incisura carotica(Eq : double, Su): notch located medially for a. carotis interna

for. caroticum

for. ovale(Ca/Bo) : foramen for N. mandibularis

incisura ovalis(Eq, Su)

for. spinosum(Ca): for a. meningea media / in Eq, Su = incisura spinosum

fossa piriformis: depression for the caudal part of the lobus piriformis

sulcus n.opthalmici(Ca/Eq): groove for n. opthalmicus

sulcus n. maxillaris(Ca/Eq)

sulcus n. opthalmici et maxillaris(Bo/Su)

 

proc. pterygoidea: process of the basisphenoid

canalis alaris(Eq/Ca): perforates the process pterygoidea for passage of a. maxillaris

for. alare rostrale: rostral opening for for. alare caudale and for. parvum(in Eq)

crista pteryygoidea(no Ca): border of the fossa pterygopalatine

canalis pterygoidea : for N. canalis pterygoidea

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os presphenoidale

 

corpus

jugum sphenoidale: entrance of optic canal

rostrum sphenoidale: extension of the body of the presphenoid

crista sphenoidale : sphenoid crest, for attachment of etmoid bone

sulcus chiasmatis: right and left optic canal goes through it

crista orbitosphenoidale: caudal border of jugum sphenoidale

sinus sphenoidalis(no Ca)

 

ala

canalis opticus : canal for optic nerve

for. opticum: opening of canalis opticus

incisura ethmoidalis(Eq)

proc. clinoideus rostralis: process on the caudal border of ala

 

os pterygoideum

hamulus pterygoideum: hook like process at the rostroventral end of the os pterygoideum

 

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이전 : [수의해부학]1. Os occipital (후두골)

다음 : [수의해부학] 3. Os temporale

[수의해부학] 3. Os temporale