Gibson Eyes

Card Set Information

Author:
pretty4Jesus
ID:
83627
Filename:
Gibson Eyes
Updated:
2011-05-03 22:50:41
Tags:
Neuroscience Block3
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Description:
Gibson Eyes
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The flashcards below were created by user pretty4Jesus on FreezingBlue Flashcards. What would you like to do?


  1. Optic disk
    • where RG axons come together to exit eye..
    • (as optic nerve)
  2. Accommodation
    constrict ciliary m, lens relax and become more naturally spherical
  3. PR cell
    • 1,000 flattened discs- R
    • half- C
    • site of photon-capture
  4. RPE
    • 1. phagocytosing membrane disc
    • 2. recyling 11-cis-retinal
  5. Rods
    • Longer, cylindrical OS, more photopigment
    • SEPARATE plasma memb, free-floating organelles
    • 95%
    • *convey ONLY "total" light intensity (luminance) to brain
    • high sensitivity
  6. Cones
    • Smaller, conical shapped OS
    • Discs= envagination of plasma memb, continuous memb sheet
    • 5%
    • LOW SENSITIVITY, HIGH TEMPERAL RESOLUTION
    • dense at fovea, only-at foveola
    • *convey color (wl) & "total" intensity to brain
    • loss is more detremental
  7. Blue
    • 437nm
    • S
  8. Green
    • 533nm
    • M
  9. Red
    • 564nm
    • L
  10. Color perceptn
    • COnfusion in int and wl
    • need to compare intensities
  11. scotopic
    rods
  12. photopic
    cones
  13. bdrop in Ca
    • 1. inc affin for cGMP
    • 2. Inc guanylate cylase
    • 3. inc rhodopisn kinase

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