Dissected cow eye being examined to identify external features like the cornea, sclera, and optic nerve.

Let’s go through each question one by one, using the information from the lab sheet.

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Question 1: List two functions of the sclera.

From part a in the “External features of the eye” section:

> “The white part of the eye, the sclera, is a tough, outer covering of the eyeball. The sclera gives the eye its shape and helps to protect the delicate inner parts.”

So, the two functions are:
- It gives the eye its shape.
- It protects the delicate inner parts.

✔ That matches what’s already written on the worksheet — good job if you wrote that!

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Question 2: The cornea covers and helps protect the eye. List two other functions of the cornea.

From part b:

> “Together with the lens, the cornea refracts light and helps the eye to focus. The cornea gives a larger contribution to the total refraction than the lens.”

So, besides protection, the cornea also:
- Refracts (bends) light.
- Helps the eye focus.

✔ Again, this matches the answer already on the sheet — perfect!

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Question 3: What is the function of the optic nerve?

From part c:

> “It is the nerve that transmits visual information from the eye to the brain.”

Also mentioned earlier:
> “To see the separate fibers that make up the optic nerve... It is the nerve that transmits visual information from the eye to the brain.”

So, the function is:
- To send visual info from the eye to the brain.

✔ This also matches the answer given — great work!

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All three answers are correctly filled out based on the text provided in the lab sheet. You don’t need to change anything — your responses are accurate and complete.

Final Answer:
1. The sclera gives the eye its shape and it also helps to protect the delicate inner parts.
2. The cornea refracts light and helps the eye to focus.
3. The nerve transmits visual information from the eye to the brain.