N. Olfactorius (I) Flashcards

1
Q

Fibertype/kerner

A

Specielt viscerale afferente fibre i 20 små umyelinerede fila olfactoria

N. olfactorius ender i bulbus olfactorius, hvor den danner synapse med mitralceller. 2. neuronernes axoner sender gennem tractus olfactorius. Mitralcellerne er samlet i små aggregater, glomerulus.

Bulbus olfactorius er placeret lige over cavitas nasalis under lobus frontalis.

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2
Q

Apparente udspring

A

På undersiden af bulbus olfactorius

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3
Q

Intrakranielle forløb

A

Fibrene løber i bulbus olfactorius  tractus olfactorius  primære lugtebark i temporallappen (gyrus parahippocampalis), amygdala, hypothalamus og septumkerner.

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4
Q

Duraperforation

A

Fila olfactorius passere op gennem basis af kraniet på midtlinjen i fossa cranii ant. Op gennem hullerne i lamina cribosa i os ethmoidalis

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5
Q

Nervens ekstrakranielle forløb m. Grene

A

Sansecellerne i regio olfactoria sender fila radicularia op til hullerne

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6
Q

Eventuelle ganglier

A

Ingen

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7
Q

Funktion

A

Bilateral repræsentation af lugtestimuli

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8
Q

Test

A

Kan personen lugte eller ej

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