Name: ___________________
Date: ______________
Cow Eye Dissection Worksheet
1. Follow Step 1 in the Cow’s Dissection Guide.
Record 3 observations you made when you examined the surface of the eye:
a.
b.
c.
2. Follow Step 2 in the Cow’s Dissection Guide.
Identify and describe the following structures:
a. cornea
b. optic nerve
c. iris
d. pupil
f. sclera
4. Follow Step 3-7 in the Cow’s Dissection Guide.
Make two observations about the lens.
a.________________________________________
b.________________________________________
5. Match the following structure of the cow eye with their function and/or
description.
a. tapetum
b. myelin
c. retina
d. lens
e. sclera
f. iris
g. pupil
____________ Contains the photoreceptors for vision.
____________ Colored portion of the eye.
____________ Opening in the iris through which light passes.
____________ Iridescent portion of the choroid layer found in nocturnal
animals.
____________ White of the eye.
____________ Fatty layer that surrounds each nerve fiber.
6. Step 8-13 in the Cow’s Dissection Guide.
Use the pictures below to name the parts of the eye:
1. ________________________________________
2. ________________________________________
3. ________________________________________
4. ________________________________________
5. ________________________________________
6. ________________________________________
7. ________________________________________
8. ________________________________________
9. ________________________________________
10.
____________________________________
11. ________________________________________
12.
__________________________________
Name 5 of 12!
7. Name the two locations in the eye that contains the sensory neurons.
8. How do sensory neurons communicate a message about what you see?
9. Where do the signals sent down the optic nerve end up?
10. What kind of sensory neurons are found in the retina?