Structures 1
This is the transparent covering of the eye.
What is the cornea?
This is the tissue at the back of the eye that contains photoreceptors.
What is the retina?
Two differences between a human eye and a cow eye.
Cow eyes are larger, cow eyes have an oval pupil (human eyes have a round pupil), cow eyes have 4 muscles attached (human eyes have 6)
What is 6?
This is the hole in the iris that allows for the entrance of light.
What is the pupil?
This is the fluid posterior to the cornea.
What is the aqueous humor?
This has the function of supplying the cornea with nutrients.
What is the aqueous humor?
This is what happens to an image when it is focused on the retina.
The image is inverted.
This is the muscle that controls how much light enters the eye.
What is the iris?
This is the thick fluid that gives shape to the eye.
Vitreous Humor
These are the two structures that work together to focus light.
What are the cornea and lens?
This is the reason that there is a blind spot where the retina meets the optic nerve.
What is the lack of photoreceptors at this spot on the retina?
This is the white tissue that covers the eye.
What is the sclera?
What is the blind spot?
In order to see a clear image, light must do this on the retina.
What is focus on one spot on the retina?
This structure has the function of providing strength for the eye as opposed to impacting visual clarity.
What is the sclera?
This is the flexible structure that adjusts to focus an image.
What is the lens?
This is the reflective layer at the back of the eye in animals.
What is the tapetum?
This is what happens to the pupil when light decreases.
What is dilate?
The bending of light.
What is refraction?