EXERCISES, LESSON 5
INSTRUCTIONS: Answer the following exercises by marking the lettered response
which best answers the question.
After you have completed all the exercises, turn to "Solutions to Exercises" at the end of
the lesson and check your answers. For each exercise answered incorrectly, reread the
material referenced with the solution.
1.
The sclera is best described as:
a.
The inner layer of the wall of the bulbus oculi where the rods and cones
of the eye are located.
b.
The white and very dense fibrous connective tissue that is the outermost
layer of the bulbus oculi.
c.
The middle layer of the wall of the bulbus oculi.
d.
The transparent layer that forms the outermost portion of the bulbus
oculi.
2.
The retina is:
a.
The middle layer of the bulbus oculi that is pigmented black to absorb
light rays so they will not be reflected at random within the eye.
b.
The transparent portion of the bulbus oculi that serves as the major
focusing device for the eye.
c.
The inner layer of the wall of the bulbus oculi where the photo-receptor
elements of the eye are located.
d.
The non-nervous portion of the inner layer of the bulbus oculi.
3.
The cones of the bulbus oculi function to:
a.
Perceive black and white.
b.
Perceive colors.
c.
Prevent random reflection of light rays within the eye.
d.
Provide vision in conditions of little or no light.
MD0805
5-14
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