• 1. 
    The optic nerve has a covering that helps protect and insulate it called the

  • muscle fiber
  • fat layer
  • myelin sheath
  • trash bag
  • 2. 
    What are the functions of eyelids and eyelashes

  • to protect and rehydrate the eyes
  • keep dirt out of the eyes
  • keep debris out of the eys
  • all of the above
  • 3. 
    What type of fluid is found in this portion of the eye?

  • aqueous humor
  • otic humor
  • vitreous humor
  • oris humor
  • 4. 
    True/False: The vitreous humor helps give the cornea its rounded shape.

  • True
  • False
  • 5. 
    What is the fluid in this portion of the eye called?

  • aqeous humor
  • otic humor
  • vitreous humor
  • oris humor
  • 6. 
    The pupil is located at the center of the

  • sclera
  • iris
  • retina
  • nothing
  • 7. 
    The iris in a human can be

  • brown
  • green
  • blue
  • all of the above
  • 8. 
    What part of the eye is this?

  • cornea
  • lens
  • iris
  • cilicary body
  • 9. 
    The cornea

  • helps protect the eye
  • begins bending light to make an image
  • both of the above
  • none of the above
  • 10. 
    The blind spot is created by the

  • retina
  • optic nerve leaving the eye through the retina
  • nothing; we don't have one
  • All of above
  • 11. 
    The human eye is surrounded by how many muscles?

  • 4
  • 2
  • 6
  • 5
  • 12. 
    True/False: The tapetum helps with night vision.

  • True
  • False
  • 13. 
    Cones are light sensitive cells in the retina that

  • give you color vision in bright light
  • respond in dim light
  • give you color vision in dim light
  • respond in bright light
  • 14. 
    The vitreous humor is

  • gel like and gives the eyeball its shape
  • watery and gives the eyeball its shape
  • 15. 
    The optic nerve transmits signals to the

  • temporal lobe
  • parietal lobe
  • occipital lobe
  • frontal lobe
  • 16. 
    The sclera is designed for

  • strength
  • clarity
  • 17. 
    Rods are light sensitive cells in the retina that

  • give you color vision in dim light
  • respond in dim light
  • give you color vision in bright light
  • respond in bright light
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