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Anatomi > Indre Øre > Flashcards

Indre Øre Flashcards

1
Q

Auris interna beliggenhed

A

Pars petrosa i os temporale

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2
Q

Inddeling af labyrinten

A

Den benede labyrint (labyrinthus osseus)
Den hindede labyrint (labyrinthus membranaceus)

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3
Q

Den benede labyrint opdeles i..?

A

Den benede buegang (canalis semicircularis)
Vestibulum
Cochlea

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4
Q

Hvilken væske findes i den benede labyrint?

A

Perilymfe (forbundet med CNS)

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5
Q

Den hindede buegang inddeles i…?

A

Den hindede snegl (ductus cochlearis)
Utriculus og sacculus
Tre hindede buegange

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6
Q

Hvilken væske findes i den hindede sneglegang?

A

Endolymfe (lukket system)

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7
Q

Cochleas størrelse

A

2 1/2 sneglevindinge
Højde: 5 mm
Bredde: 9 mm ( ved basis)
Længde: (udrullet) 35 mm

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8
Q

Cochleas inddeling

A

(Den benede cochlea)
- Scala vestibuli
- Scala media
- Scala tympani

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9
Q

Hvad kaldes punktet hvor scala vestibuli og scala media mødes?

A

Helicotrema

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10
Q

Hvad består det cortiske organ af?

A

Tektorial membranen
Sansehår
Indre hårceller
Ydre hårceller
(Sidder på basilar membranen)

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11
Q

Hvormange indre hårceller er der?

A

1 række
Ca. 3.500

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12
Q

Hvormange ydre hårceller er der?

A

3 rækker
Ca. 15.000

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13
Q

Basalmembranens størrelse

A

Ved basis: Smal (0,12 mm) og stiv
Ved apex: Bred (0,5 mm) og slap

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14
Q

Blod forsyning til cochlea

A

Fra basilar artery

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15
Q

Hvad består ligevægts organet af?

A

De 3 buegange:
Canalis semicircularis anterior
Canalis semicircularis lateral
Canalis semicircularis posterier

De to otolitorganer:
Sacculus
Utriculus

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16
Q

Hvad indeholder ampullen og hvad er funktionen?

A

Ampullen indeholder cupula, hvor der sidder hårceller.
Der sidder også nerveceller og støtteceller
Funktionen er, at registrere rotation

17
Q

Hvad indeholder otolitorganerne og hvad er deres funktion?

A

Indeholder macula som indeholder otolitsten
Funktionen er at registrere lineær acceleration og hovedstilling

Anatomi (3 decks)

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