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Retina
This layer of light sensitive cells at the back of the eye. This detects images focused by the cornea and the lens. It is connected to the brain by th...
Cornea
A tough, clear covering over the iris and the pupil that helps protect the eye. Light bends as it passes through this. This is the first step in makin...
Pupil
Located in the dark circle in the center of your iris. It is a hole that lets light into your eye. ( cows is oval while humans in round )
Aqueous Humor
A clear fluid that helps the cornea keep its shape. It is made out of protein and water.
Iris
A muscle that controls how much light enters the eye. It is suspended between the cornea and the lens. Cows is brown.
Lens
A clear flexible structure that makes an image on the eyes retina. This is flexible so that it can change shape, focusing on objects that are close up...
Vitreous Humor
A thick, clear jelly that helps give the eyeball its shape
Sclera
A thick thought white outer covering of the eyeball
Tapetum
The colorful, shiny material located behind the retina. It is found in animals with night vision.
Optic Nerve
The bundle of nerve fibers that carry information from the retina to the brain.
Blind Spot
The place where the optic nerve leaves the retina. This is where there are no light sensitive cells.
How do cows move their eyes?
they can only look up down left right, only four muscles for that.
How does light travel through your eye?
Reflected light first travels through your cornea. The light then shines through your pupil. Then it shines through your lens. It bends the light then...
Is the response of your pupil a reflex or a voluntary action? Describe how this response is controlled by the nervous system.
It is a reflex. The pupil constricts when the circular muscle, controlled by the PNS contracts.
Describe two ways in which the cow eye and the human eye differ? How are these differences linked to function?
The cow eye has a tapetum while the humans do not. Humans are not nocturnal, therefore they do not need to see in the dark. Cows have oval shaped pupi...
