N. oculomotorius, III Flashcards

1
Q

Kerner

A

nc. n. oculomotorius

nc. Edinger Westphal

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2
Q

Fibertype

A

somatomotorisk / somatisk efferent -> nc. n ocolumotorius

visceromotorisk / visceral efferent -> nc. Edinger Westphal

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3
Q

App. udspring

A

fossa interpeduncularis

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4
Q

Intrakranielle forløb

A

Projicerer frem mellem a. cerebelli sup. og a. cerebri post.. Løber helt sup. i sinus cavernosus frem til fissura orbitalis sup.

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5
Q

Duraperforation

A

fissura orbitalis sup

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6
Q

Ekstrakranielle forløb

A

nerven deler sig i ramus sup. et inf..

Ramus sup.:
Løber opad, lateralt for n. opticus og a. opthalmica.
Innerverer: m. rectus sup. & m. levator palpebrae sup.

Ramus inf.
1. Løber i bunden af orbita.
Innerverer: mm. rectus inf. et med. & m. obliquus inf.

  1. Afgiver præganglionære visceromotoriske (parasympatiske) fibre til ganglion cilliare. Postganglionære fibre udspringer til og innerverer: m. ciliaris & m. sphincter pupillae
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7
Q

Innerverer

A

mm. rectus sup, inf et med
m. obliquus inf
m. levator palpebrae sup
m. ciliaris
m. spincther pupillae

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8
Q

Klinik: læsion af nerven

A

Læsion af oculomotorius medfører øjet deriverer udad/nedad ipsilateralt for skaden.

OBS: øjet kan ikke føres medialt

Desuden ses ptose, dilateret pupil + nedsat akkomodationsevne

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