Eye Lab

lacrimal gland

superior/lateral to eye - secreates/produces tears

conjunctiva

protects eye- mucus membrane

cornea

clear structure - refracts light

sclera

white outside - shape to eyeball

choroid

supplies blood to three layer

ciliary body

red - changes shape of lens - nproduces aqueous humor

ciliary muscles

changes shape of lens

ciliary processess

produces aqeuous humor

iris

colored part- size of pupil/amount of ligth

pupil

opening in iris

anterior cavity

from lens to cornia - drainage / contain aqueous humor

posterior cavity

from lens to retina - contains virteous humor

pupillary refelx direct

pupil of eye receiving light constricts

pupillary refelx indirect

oppisite pupil also constricts

blind spot

optic disc no photo recptors brain fills color in

binocular vision / depth perception

brain blends two into single image binocular fusion

lens

refraction / focusing light onto retina

fovea centralis

area of sharpest vision (cones)

rods

dim light, peripheral vision, more of

cones

color, sharp vison fewer, more in center