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20 questions
This structure is the back of the eye and it sends images to the optic nerve.
Cornea
Lens
Retina
Pupil
The hole in the iris gets bigger and smaller because
the iris is a muscle that moves to make the pupil larger/smaller
the pupil can adjust itself to the amount of light coming in
the pupil is a muscle that controls the size of the iris
The thick, tough, white outer covering of the eyeball is called the __________________.
sclera
lens
pupil
cornea
The iris in a human can be
brown
green
blue
all of the above
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
The optic nerve transmits signals to the
temporal lobe
parietal lobe
occipital lobe
frontal lobe
The cornea
helps protect the eye
begins bending light to make an image
both of the above
none of the above
The pupil is located at the center of the
sclera
iris
retina
nothing
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
The optic nerve has a covering that helps protect and insulate it called the
muscle fiber
fat layer
myelin sheath
trash bag
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