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A Comparison Between a Human’s and Cow’s Eye Sample Essay

My hypothesis is that we should be able to see all the parts of a human oculus ( that we’ve been analyzing from the text book ) in the cow’s oculus. This is my hypothesis because merely from my cognition. I think cow’s need to see every bit good as worlds do. They need to see what they are eating. where they are traveling. and since all mammals are slightly related. their oculus maps should be comparatively similar to each other. I don’t believe development changed the maps of orb in mammals that otherwise to each other. We all live in similar environment and we all use eyes for the same intent.

The Exterior of the Eye

A tabular array comparing the outside of the orb in cattles and worlds

Ocular Nerve

It looks precisely like in the text book. except that I think that the white ‘wall’ or ‘membrane’ environing the nervus fibres in the hog was thicker ; I could barely see the nervus fibres.

Student

The form of the student in cow’s are egg-shaped. Worlds are round. When strong visible radiation passed the student of the cow’s oculus. it appeared to be bluish coloring material! Worlds are merely black.

Sclera

They appear to be the same. ( The cow’s sclerotic coat is so thick to interrupt through! )

Iris

When I looked about at my colleague’s eyeball cow. all the flag seemed to be dark brown. I know that human’s iris come in different coloring materials such as green. blue. grey. etc.

Cornea

They look precisely the same

Exterior Observations – A diagram exemplifying the form of Cornea. Iris and Pupil

Description of Cow’s Eyeball’s Shape

The two orbs ( cattles and worlds ) look really similar. The cow’s orb seemed to be about unit of ammunition ( excepting the cornea subdivision ) . The cornea ever seemed to be the portion that was ‘sticking out’ of the orb.

Function for Muscles

The musculuss and pieces of fat were attached to the thick sclerotic coat of the orb. The musculuss were thick and fat. The map of the musculuss there are to travel the orb about so that you can hold full vision around your oculus. non merely in forepart. The musculuss are at that place in order to travel your orb around your socket.

The Interior of the Eye

A diagram from the interior back half of the dissected orb

Diagram of the inside front half of the dissected orb

Lenss

The cow’s lens seem to be precisely the same as the human lens. When I examined the lens. and I put it up near to an image. it about worked as a magnifying glass. BUt when I put it up to an image with a distance. the image turned up side down. This proves that our orb ( more like our retina ) ‘sees’ images up side down. and that our encephalon converts the image the right manner around for us.

Vitreous Humour

The vitreous temper was jelly-like. and clear. It filled up most of the interior eyball. and didn’t pip-squeak out when I stabbed the orb with the knife. The vitreous temper expressions like mucous secretion. but isn’t sticky. This temper helps to make full and give the orb it’s form.

Analysis

Prefer eyes confronting forepart or side? Table of disadvantage and advantage of eyes on sides and forepart

Eyess on forepart

Advantage – You can see in forepart of you without turning your whole caput to one side. Besides. take an illustration of a king of beasts. Eyess in forepart of them assist them watch their quarry and justice how far they are.

Disadvantage – You don’t hold a broad scope of vision as eyes on the sides of your caput

Eyess on sides

Advantage – You have a really broad scope of vision. Take an illustration of a Equus caballus: their vision are about up to 350 grades! This helps them so that they can see if there are any lion-like huntsmans mousing back at them from buttocks.

Disadvantage – Sometimes in order to see something good in forepart of you. you need to turn your whole caput to the side. You of all time watched a cow eating? ? It turns their caput to the side!

A Cow Colour Blind or Not?

I can state from the orb that the cow is non color blind. The dorsum of the orb ( from the interior ) has many colorss. This is caused by cones which incorporating different pigments. Humans usually have 3 pigments roll uping bluish. yellow-green and green. the abillity seeing different colorss. In cattles. as we’ve dissected. we can see that it has many pigments. therefore it must non be color blind.

Decision

My hypothesis was right. that a cow’s oculus and human’s oculus are really similar. I think that the major difference was merely the form of the student. We have all the maps like cow’s. except their eyes a batch bigger than our eyes. Now that I know how strong and tough the scela is. following clip I will cut the musculuss around it freely ( I wasted so much clip seperating the musculuss because I thought the scerla was dilutant ) . A cow is slow and wouldn’t have clip to turn it’s whole caput 180 grades merely to see if there’s a king of beasts behind it. That’s another advantage of holding eyes on the sides of your caput. I was able to compare the illustration from the text-book and do connexions. I was able to dissect the cow’s orb and draw decision and justify to my observations. like the colour-blindness.

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