Cow Eye Dissection (DOC)

							Sheep/Cow Eye Dissection
1. Record three observations you made when you examined the surface of the eye:

a.      ______________________________
b.      ______________________________
c.      ______________________________



2. Identify the function of the following structures:

a.      cornea
c.      optic nerve
d.      iris-
e.      pupil-
f.      retina
g.     aqueous humor
h.     vitreous humor
i.     ciliary body
j.     sclera
k.     choroids
l.     lens

3. Name the three layers you sliced through when you cut across the top of the eye:

a.      ______________________________
b.      ______________________________
c.      ______________________________

4. Match the following parts of the eye to their function: (ciliary body, sclera, iris, retina, lens, &
tapetum lucidum)

______________________ Contains the photoreceptors for vision.

______________________ The colored portion of the eye.

______________________ This structure changes shape to focus light on the retina.

______________________ The opening in the iris through which light passes.

______________________ Consists of muscles, which control and shape the lens.

______________________ The white of the eye.

______________________ The iridescent portion of the choroid layer found in nocturnal

                                animals.
4. Use the pictures above to name the parts of the eye:




1.     ________________________________________

2.     ________________________________________

3.     ________________________________________

4.     ________________________________________

5.     ________________________________________

6.     ________________________________________

7.     ________________________________________

8.     ________________________________________

9.     ________________________________________

10.    ________________________________________

11.    ________________________________________

12.    ________________________________________