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U2 Lab Practical: Sheep Eye Dissection

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Last updated 5 months ago
21 questions
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Question 21
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Answer(s) Confidence Tracker:__________
Thank you for completing this Sum It Up!
Question 1
1.

Question 2
2.

Question 3
3.

What does the choroid layer provide? Check all that apply.
oxygen via blood
preceived color
fluid to keep the shape of the eye
nutrients via blood
Question 5
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Question 8
8.

What is the primary function of rod cells in the eye?
Color vision in bright light.
Providing sharp visual detail.
Detecting light in dim conditions.
Filtering UV light from the sun.
What is the main function of the tapetum lucidum in a sheep eye?
Focuses light onto the retina.
Protects the eye from dust.
Enhances low-light vision at night.
Adjusts the lens for distance vision.
What is the main function of the lens in a sheep eye?
Regulates pupil size.
Protects the eye from injury.
Helps with color perception.
Focuses light onto the retina.
Question 12
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Question 13
13.

Which type of photoreceptor is responsible for color vision?
Neither rods nor cones detect color.
Cone cells are responsible for color vision.
Both rods and cones provide color vision.
Rod cells help in color vision.
Question 15
15.

What is the main function of the sclera?
Provides protection and structure to the eye.
Helps the eye focus light.
Controls eye movement and alignment.
Regulates the amount of light entering the eye.
These eye muscles allow the sheep to move its eyes from side to side. Check all that apply.
superior rectus
lateral rectus
medial rectus
inferior rectus
Question 18
18.

Draggable itemarrow_right_altCorresponding Item
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Where is the retina located?
It serves as an eyelid.
It covers the front of the eye.
It covers the pupil.
It lines the back of the eye.
What color is the iris of the sheep eye?
brown
yellow
green
blue
The structure labeled letter "A" helps send light into the eye. What is the name of this structure
iris
lens
sclera
retina
What is the structure labeled letter "B"?
fatty tissue
tapetum lucidum
retina
cornea
The structure labeled letter "C" focuses images in the eye. You colored it light blue in your notebook model. What is the name of this structure?
iris
optic nerve
pupil
lens
What is the name of the structure that the forceps is pulling on?
sclera
lens
retina
iris
What is the function of the structure that the forceps is pulling on?
protect eye and give it shape
allows light in
cushions/protects eye
translates light impuses to brain
Where does the structure held by the forceps connect to the eye?
ciliary muscles
blind spot
optic nerve
cones
What is the name of the structure that looks like a pearl?
iris
aqueous humor
lens
optic nerve
This is a view of the back side of the sheep eye. What is the structure labeled "G"?
pupil
medial rectus muscle
optic nerve
cornea
What is the function of the structure labeled "G"?
It allows light in.
It carries visual messages.
It keeps the eye in the socket.
It makes the eyes move.
Is this a sclera?
yes
no
Match
structure "F"
found in both sheep and human eyes
structure "E"
found in sheep eyes, not in human eyes