Blinking

[Holy Star]

How did this event evolve into a neccessary thing for all organisms? DISCUSS

 

[Marril]

Obviously, it was imperative that the eyes remain moist, and blinking was the most efficient way for them to not dry out. Evolution kicked in and said, "Hey now, this works, let's let this continue" and the rest is history.

As an aside, what's with all the "you ever think about Body Function X?" threads?

 

[Absoltrainer]

It is used to clean your eyes.

You eyes have a membrane on them to keep out dirt and stuff but you blink to both clean the membrane and clean out anything to get past the membrane.

Think of the membrane as a windsheild on a car and the eyelid/lash as a windsheild wiper

 

[PSYCO829]

look what i've started...
now we are questioning all the bodies movements and motives...

 

[pichuman]

^ good job hope ur proud of yourself. lol. ^_^

 

[moza]

Evolution just decided it was the most effecient way to keep your eyes moist and clean.

AKA what Marril said.

 

[David's Confused Pokedad]

Its also a reflex.

 

[pichu bros. rox]

Not really a reflex but an instinct

 

[SuperWooper]

The question is not, "Why do we blink?" but rather, "Why does Nancy Pelosi do it so much?"

 

[PSYCO829]

it is designed to protect your eyes with a milimeter thick piece of skin
how can you not see the usefulness?

 

[ZAKtheGeek]

And of course your eyes will be perfectly protected by that piece of skin they're covered by 1/1000th of the waking time.

 

[ninetales1234]

How did this event evolve into a neccessary thing for all organisms? DISCUSS

Some snakes don't do it.

 

[lilgroudon]

Blinking and breathng are both scary you don't know when you do it until you stop and it hurts

 

[Roy 747]

The question is not, "Why do we blink?" but rather, "Why does Nancy Pelosi do it so much?"

IDK who she is but most chicks wear to much mascara and can get very itchy. (trust me, I would know).

 

[swampert97]

Some snakes don't do it.

ALL Snakes don't do it. Snakes and some other reptiles have something over their eyes that protect them. :biggrin:

 

[Phazon Elite]

Jellyfish also do not blink, AFAIK

 

[Arcanine 274]

IDK who she is but most chicks wear to much mascara and can get very itchy. (trust me, I would know).

Speaker of the House. Don't ask me how I know that.

 

[Marril]

Some lizards lick their own eyeballs for the same effect.

 

[SuperWooper]

Speaker of the House. Don't ask me how I know that.

Gee, because it's common knowledge?

 

[Arcanine 274]

Gee, because it's common knowledge?

Not when you're not even into High School. I bet I'm one of the five people out of the 1100 at my school that knows it.