Cow Eye Lesson

Where did Katie and the Exporatorium get their cow eyes?

• they order them from a website

• they get them from local meat distributors

• they get them from their own farm

• None of the above

This is the main reason Katie said they use a cow's eye for dissection:

• cow eye is much smaller than a human eye

• cow eye is much larger than a human eye

• cow eye is easily obtainable from website

• None of the above

The pink and white portion that is shown in this screenshot is made up of _______________, and will ______________.

• fat & muscles, be removed

• gross stuff, remain on the eye

• muscles, be removed

• fat, stay on the eye

What does Katie say is the function (purpose) of the fat around the eye?

• cushions the eye and keeps it in place

• does not have a purpose because we just will cut it off

• gives the eye nutrients to stay healthy

She is pointing to this structure which will be cut and then what happened?

• pointing to the cornea, aqueous humor comes spilling out of the eye and deflates the eye

• pointing to the lens, cuts the eye in half and sets it on the table

• pointing to the fat/muscles of the eye, she sat the eye in her palm

What structure is this "white part around they eye" she is going to cut all the way around, and ending up with a top and bottom portion of the eye.

• cornea

• fat/muscles

• sclera

• lens

When she cut the layers of the cornea shown here, did it make any noise?

• yes

• no

What part of the eye is she holding here? (the colored part)

• pupil

• iris

• lens

• cornea

The hole in the iris gets bigger and smaller because

• the iris is a muscle that moves to make the pupil larger/smaller

• the pupil can adjust itself to the amount of light coming in

• the pupil is a muscle that controls the size of the iris

What is one main difference between a cow eye and a human eye from the options below? (two are correct)

• cow eye is larger

• a cow iris is oval

• human eye is larger

• a human iris is oval

Tags

NGSS.MS-LS4-2