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Samenvatting Stelselmatige Weefselleer H11: Oog
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Samenvatting gebaseerd op slides van professor Vral met bijhorende notities van in de les, alles wat je voor de theorie moet kennen van dit onderdeel.
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Samenvatting H11: OogInhoud
1. De zintuigen........................................................................................................................................2
2. Het gezichtsorgaan.............................................................................................................................2
3. Oogbol of bulbus oculi: 3 oogrokken..................................................................................................2
3.1 Buitenste oogrok= tunica fibrosa..................................................................................................2
3.1.1 Cornea of hoornvlies..............................................................................................................2
3.1.2 Sclera.....................................................................................................................................4
3.1.3 Kapsel van Tenon= gewrichtskapsel.......................................................................................5
3.2 Middenste oogrok= tunica uvea= vaatvlies...................................................................................5
3.2.1 Chorioidea.............................................................................................................................5
3.2.2 Corpus ciliare.........................................................................................................................6
3.2.3 Iris of regenboogvlies.............................................................................................................7
3.2.4 Zonula van Zinn of zonula ciliaris...........................................................................................8
3.2.5 Lens........................................................................................................................................8
3.2.6 Glaslichaam of corpus vitreum..............................................................................................9
3.3 Binnenste oogrok of retina.........................................................................................................10
3.3.1 Pigmentepitheel...................................................................................................................10
3.3.2 Staafjes en kegeltjes laag.....................................................................................................11
3.3.3 Membrana limitans externa.................................................................................................11
3.3.4 Buitenste korrellaag.............................................................................................................12
3.3.5 Buitenste plexiforme laag....................................................................................................12
3.3.6 Binnenste korrellaag............................................................................................................12
3.3.7 Binnenste plexiforme laag....................................................................................................12
3.3.8 Ganglionaire laag.................................................................................................................12
3.3.9 Nervus opticus vezellaag......................................................................................................12
3.3.10 Membrana limitans interna...............................................................................................12
3.3.11 Gespecialiseerde zones......................................................................................................13
4. Beschermende aanhangsels.............................................................................................................13
4.1 Ooglid of palpebra......................................................................................................................13
4.1.1 Voorzijde: dunne huid..........................................................................................................13
4.1.2 Omslag tussen voorzijde en binnenzijde..............................................................................14
4.1.3 Binnenzijde: Conjunctiva= oogslijmvlies= bindvlies.............................................................14
4.2 Traanapparaat.............................................................................................................................14
1
, 4.2.1 Traanklier.............................................................................................................................14
4.2.2 Traankanaaltjes....................................................................................................................14
4.2.3 Traanzak of sacculus lacrimalis.............................................................................................14
4.2.4 Ductus nasolacrimalis..........................................................................................................14
1. De zintuigen
- Receptoren
- Registreren veranderingen in binnen- en buitenwereld omzetten in actiepotentiaal voor
zenuwvezels
- Specifiek: reuk + smaak + tast + optische + geluid prikkels
2. Het gezichtsorgaan
- Oogbol
- Aanhangsels
o Oogleden
o Traanapparaat
o Oogspieren
3. Oogbol of bulbus oculi: 3 oogrokken
- Buitenste oogrok/tunica fibrosa dens collageen bindweefsel
o Sclera
o Cornea
o Limbus
- Middenste oogrok/tunica uvea/vaatvlies
o Chorioidea
o Corpus ciliare
o Processus ciliares
o Iris
- Binnenste oogrok/netvlies
o Retina/netvlies
Ligging van kegels en staven= receptorcellen voor lichtprikkels
o Ora serrata
o Pigmentlaag
o Nervus opticus
o Papilla
o Macula lutea/fovea centralis
3.1 Buitenste oogrok= tunica fibrosa
3.1.1 Cornea of hoornvlies
- Voorste 1/6 van tunica fibrosa
- 1 cm diameter en 1 mm dik
- Lichtbrekend medium
- Elliptisch
- Transparant
- Convex
- Limbus: ter hoogte van overgang cornea sclera soort groeve
2
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