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14 Cards in this Set

  • Front
  • Back
Anterior Chamber
In anterior cavity
behind cornea, in front of iris
Posterior chamber
in anterior cavity
in back of iris, in front of lens
*aqueous humor
Aqueous humor
produced by the ciliary body
returned to circulation through the CANAL OF SCHLEMM
replaced every 90 mins
increase pressure = glaucoma
canal of Schlemm
scleral/coronal junction
posterior cavity
vitreous body (humor)
get like inconsistency
not ever replaced
hold retina in place
viscous ground substance
retina
the size and thickness of a postage stamp
-macula lutea
-fovea centralis
-optic disc
macula lutea
small yellow spot, 4 mm in diameter
exact center of the posterior of the retina
fovea centralis
in the center of the macula lutea; small depression
normally where light is focused
point of greatest visual acuity
cones are mostly densely packed here; 35,000 in that spot - no rods
optic disc
just medial to the macula lutea
white spot
where nerve processes all meet from the photoreceptors all around the retina and exit the eye
blood vessels enter and leave the eyeball via optic nerve
reinta is made up of two parts:
1. the pigmented epithelial cells
2. the sensory retina
the pigmented epithelia cells
people with albinism have no pigment; pupil looks red due to blood vessels
the sensory retina
3 layers:
1. photoreceptors - rods and cones (not neurons)
2. bipolar cells
3. ganglion cells = axons become cranial 2
-only the ganglion cells generate action potentials; the rest are grated potentials
rods
120 million
rhodopsin is the photopigment
sensitive to low light
night vision; detect movement
*MORE IN NOTES****
cones
6 million
fovea centralis not found in periphery
iodopsin is the photopigment
color vision and visual acuity
*MORE IN NOTES****