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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