How the Body Works : Exploring the Eye

[archilles1195]

I'd love it if, every time I burb, the brain automatically triggers my vocal cord to say "excuse me". Sometimes I forgot and that's gross.

[tomp2008]

The inside of my eyeball is not humorous, nor virtuous, thank you.

[NurseBevable]

Yeah, you all are right. I was cutting up onions last night and I was wearing contacts. The fumes didn't bother me at all. If I cut up onions while wearing glasses, the fumes make my eyes water. To me, that proves there are nerves on the cornea.

[NurseBevable]

My teacher says the eye doesn't have any nerves. Is that true?

[therealTOTOfan]

@NurseBevable well every organ sensing what its made for, like ears, eyes, skin, nose have all receptor cells. those cells turn the sound or the light they recognize to electric charges, transported by nerves. so that might answer two questions.. your and the question whether your teacher is a teacher or not...

oh yeah the nerves from the cells in your eye are sticking out of the retina, which means they're on the surface, seems unlogic and like a handicap ..but as you SEE its not ;D

[TheCardGuy521]

@NurseBevable no u got a stupid teacher

[JohnBlack666id]

@NurseBevable Try poking your eye with a needle then proceed to kill you teacher.

[tetanini]

great video thanx

[0FFICALXFACT0R]

can someone explain what position are we looking at the eye from? because i dont really assosiate this with my own eye. i have nice looking brown eyes and i found this video confusing to understand

[JohnBlack666id]

@0FFICALXFACT0R The position is behind the eye.

[Dougslady716]

Watched this for class!! GO ANATOMY!!  XD

[IceOnFireProductions]

falling.........asleeeeeeeeeee­ep.... god that guy's voice makes me want to sleep!

[roooddy]

Well i was wondering that if only light enters the eye...than is everything light...example: I see a car near by, is that car, somehow, light or how do we see the car?

[vassekb]

we see it because light is reflected from it in all directions.. our eyes capture the light that is reflected in our direction. Hence the not being able to see when there is no light

[RespectMyHate]

God is awesome.

[strek0655]

Evolution is awesome..

[RespectMyHate]

Its awesome but not in a good way.

[sodr2]

Microevolution is awesom. Macroevolution is not because it works on the assumption that a god doesn't exist

[sodr2]

huh?

I'm catholic as well.....

[spikedardens]

nice reverse justifying of logic.

[archilles1195]

@strek0655 No, creation is awesome.

[JessLynnP89]

Amen.

[FishelKANI]

I am awesome.

[art4med]

This is of marginal teaching value; still, talking about structures while looking at them from behind IS unique.

[DI5CONNECTED]

If Evolution really happened, then this complexity could be a product of a random chance or a mindless process.

[strek0655]

Usa is the ONLY country that still respects the theory of Adam and Eve in medical school regarding the history of mankind. Which is absurd and ridiculous...

There are overwhelming proof that evolution is the reason for our complexity and existence. And your conclusion is right, but not set in a good perspective. Protesters of evolution believe that evolution is a process in which people for thousands of years walk around with "unfinished" eyes, until the point when someone can finally see. yeez!

[lombardoz]

Are you in medical school? In the USA? Right, I didn't think so. Don't criticize it with made up info from some obsolete/random/unknown blog. Now, go back to school and reformulate this weak argument.

[FishelKANI]

Wow, this moron gives all doctors a bad name. I'm hoping you aren't in medical school, you should be in dick school. Oh, and "reformulate?"

USING A THESAURUS FOR YOUTUBE FAIL

[strek0655]

It's far from made up info. I find it scary that many med schools on the us allow for a waving in of religion in many sciences if the student believe in that.

[archilles1195]

@strek0655 You are wrong. Islamic countries also respect Adam and Eve. No, they don't claim "unfinished" eyes, they just said that eyes cannot work if anyone of its part is missing, which is completely valid. What you have is a dogma.

[strek0655]

@archilles1195 Can the eye work without a lens? Yes, but not very well. Can it work without the ciliary muscle? Sure, but accommodation would be impossible . Can it work without the trochlear, abducent and oculomotor nerves, yes but you would have to turn your head to every point. These are all evolutionary additions to the primary function which is photosensitive cells. You do know that there are animals which have a poor eyesight because their adaptation doesnt require them to see (mole)

[archilles1195]

@strek0655 Don't confine your argument with the eyeball. Let's talk about vision as a whole, and there are 40 components in human eyes. All evolutionists like to answer is comparing to simpler organism, and you are talking about mole. For example, blinking, tear ducts and tears cannot come into existence by chance, those are vital for the operation of the eyes, otherwise it got damaged, right. Cont'd:

[archilles1195]

@strek0655 And there's no information in DNA to code for these, and it cannot exist to accommodate eyes all of sudden, otherwise it indicates intelligence. So, tears, blinking, eye lids must serve different functions before it's adopted by the eyes for proper function. It's very valid to argue what's good is tear duct without tears, or tears without eyelid, or blinking to lubricate and the eyes, automatically. So, what were the functions of those before it got integrated by the eyes?

[archilles1195]

@strek0655 I also have one question for you. I read one of the reasons for eye evolution is to avoid predators. Having said that, for predators which has no known predators, they have to evolve eyes as well otherwise they'll starve to death, right? That sounds planned.

[archilles1195]

@strek0655 You see, when we sneeze, we automatically close our eyes. The pressure from sneezing is so strong that it can cause serious discomfort when sneezing with eyes opened. It's an automatic response, a stimuli, we don't choose not to open, the brain tells the eyes to close it. Closing eyes when sneezing sound so trivia, because we can also close the eyes by ourselves. Can mutation works in such a way that it creates AUTOMATIC stimulus in the brain every time we sneeze and got selected?

[freakouut1]

greatness

[772892]

excellent description

[tonyballa07]

ciliary body \sounds like/ silly ary body