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...
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 )
Describe how what you see can impact other human body systems. Provide at least five specific examples of how your communication with the outside world through your eyes initiates a response
1.) if you see things that are stressful then your nervous system will give off bad neurotransmitters2.) If you see that you are under water, your res...
How do cows move their eyes?
they can only look up down left right, only four muscles for that.
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.
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.
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...
Iris
A muscle that controls how much light enters the eye. It is suspended between the cornea and the lens. Cows is brown.
Cow Eye Fat and Muscle Picture
Cow Eye Fat and Muscle Picture
Vitreous Humor
A thick, clear jelly that helps give the eyeball its shape
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...
Blind Spot
The place where the optic nerve leaves the retina. This is where there are no light sensitive cells.
Aqueous Humor
A clear fluid that helps the cornea keep its shape. It is made out of protein and water.
Optic Nerve
The bundle of nerve fibers that carry information from the retina to the brain.
19
19
The order of the structures through which light passes to get to the optic nerve...
cornea, ah, pupil, lens, vh, retina
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...
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...