Why can't we breathe underwater??

[Patrick Chewing]

I mean, you would think after millions of years of evolution and the billions who have probably drowned over time, you'd think that we would have evolved some sort of set of gills or something allowing us to breathe under water.

There is no clear evolutionary evidence that we ever did breathe underwater, so what gives?? When will our bodies evolve??

[Draz]

Truuuuuuu

[iTare]

I can.

[DonDadda59]

Because Jesus knows you touch yourself at night, that's why. :mad:

[Patrick Chewing]

It's high time we start breathing underwater. We all can't afford scuba diving lessons. One day, I'd like to swim with the dolphins, but also, I'd like to hang out with them for a few hours.

[UK2K]

I mean, you would think after millions of years of evolution and the billions who have probably drowned over time, you'd think that we would have evolved some sort of set of gills or something allowing us to breathe under water.

There is no clear evolutionary evidence that we ever did breathe underwater, so what gives?? When will our bodies evolve??

It wasn't necessary for survival. Look at any animal in the world, they have adapted to the environment in which they live.

[Patrick Chewing]

http://www.independent.co.uk/news/science/scientists-create-crystal-which-could-allow-us-to-breathe-underwater-9772871.html


Hmm seems like hocus pocus magic. Will be keeping my eye on this though.

[warriorfan]

we can haven't you seen waterworld?

[RidonKs]

mexicans can breathe underwater

[Levity]

mexicans can breathe underwater

this is true.

they just cant drink it.

[SaltyMeatballs]

You must be black.

[ballup]

You're a special kind of stupid aren't you?

[macmac]

Solid grasp on the theory of evolution, carry on.

[L.Kizzle]

Fuxk that underwater mess, I'm still trying to figure out how to fly. Anyone got that down yet?

[gigantes]

we CAN breath underwater, we just suck at it.

from what i've read, the lungs are able to deal with a certain amount of water being present. the water gets absorbed by corpuscles in the blood stream, picking up whatever O2 is present, then gets cycled out in the usual way. problem is, the body can deal with only so much water in the lungs... then it gets overloaded.


also, every human has gill slits and a tail up to a certain part of their development in the womb:


https://matthew2262.files.wordpress.com/2012/07/embryos2.jpg

[johndeeregreen]

I mean, you would think after millions of years of evolution and the billions who have probably drowned over time, you'd think that we would have evolved some sort of set of gills or something allowing us to breathe under water.

There is no clear evolutionary evidence that we ever did breathe underwater, so what gives?? When will our bodies evolve??
Agreed. Same goes for gunshot wounds. I mean, with the billions that have died from them, how has the flesh of our bodies not become bulletproof over time? For evolution to be a valid theory, we should be able to survive anything that has killed a bunch if people. Why can't our bodies stop the inertia of a speeding bus yet and halt it in its tracks? Why must we be crushed by it? I mean, so many people have been killed in auto accidents, that if Darwin wasn't full of shit, we should just be able to shoulder a 10 ton vehicle out of the way.

[macmac]

Agreed. Same goes for gunshot wounds. I mean, with the billions that have died from them, how has the flesh of our bodies not become bulletproof over time? For evolution to be a valid theory, we should be able to survive anything that has killed a bunch if people. Why can't our bodies stop the inertia of a speeding bus yet and halt it in its tracks? Why must we be crushed by it? I mean, so many people have been killed in auto accidents, that if Darwin wasn't full of shit, we should just be able to shoulder a 10 ton vehicle out of the way.

Our bodies do stop the inertia of a speeding bus.


OP will go out there and prove it to us.

[Yoda]

Stupid OP is. Understand evolution, he does not.

[Patrick Chewing]

Fuxk that underwater mess, I'm still trying to figure out how to fly. Anyone got that down yet?


Bro, why you wanna be up in the air?? There ain't nothing up there but clouds. Down in the water with the sharks and the jellyfish is where it's at.

[Patrick Chewing]

we CAN breath underwater, we just suck at it.

from what i've read, the lungs are able to deal with a certain amount of water being present. the water gets absorbed by corpuscles in the blood stream, picking up whatever O2 is present, then gets cycled out in the usual way. problem is, the body can deal with only so much water in the lungs... then it gets overloaded.


also, every human has gill slits and a tail up to a certain part of their development in the womb:


https://matthew2262.files.wordpress.com/2012/07/embryos2.jpg


You're giving me hopes!!!

[CavaliersFTW]

What the ****? Don't tell me you're one of those idiots who don't believe in evolution.

Why on earth would you make a thread like this, I hope it's just a joke.

Evolution is adaptation of a gene pool to environmental conditions. We, and our ancestors (as in your mother and fother, and their mothers and fathers, etc etc etc etc etc etc) for thousands of generations have not been forced into environments where we need to breath water or die. Thus... we do not breathe under water.

Stupid ****ing thread.

[fpliii]

What the ****? Don't tell me you're one of those idiots who don't believe in evolution.

Why on earth would you make a thread like this, I hope it's just a joke.

Evolution is adaptation of a gene pool to environmental conditions. We, and our ancestors (as in your mother and fother, and their mothers and fathers, etc etc etc etc etc etc) for thousands of generations have not been forced into environments where we need to breath water or die. Thus... we do not breathe under water.

Stupid ****ing thread.
Crazy that it's ****ing 2015, and the bolded is still an issue.

[LikeABosh]

That's not how evolution works bud. Don't think too hard or you'll hurt your little brain

[PistonsFan#21]

You're giving me hopes!!!

If you do believe in evolution do a quick google search on the hiccup phenomenon and how its associated with humans past history as aquatic mammals that could breathe under water. We apparently lost this capacity due to evolution

[Patrick Chewing]

If you do believe in evolution do a quick google search on the hiccup phenomenon and how its associated with humans past history as aquatic mammals that could breathe under water. We apparently lost this capacity due to evolution


Interesting. What about yawning? Only thing I've found is a possible lack of oxygen in the brain causes us to yawn.

[JEFFERSON MONEY]

Patrick Chewing Is An Idiot

[iamgine]

I think everybody believe in evolution, it's just the extent of it that's different.

[Patrick Chewing]

I think everybody believe in evolution, it's just the extent of it that's different.


Correct. I don't know where all these nancy boys got that I was not a believer in evolution. I just want to breathe underwater, bro. Let me breathe.

[L.Kizzle]

Bro, why you wanna be up in the air?? There ain't nothing up there but clouds. Down in the water with the sharks and the jellyfish is where it's at.
Nigha, do I look like SpongeBob?

[shlver]

we CAN breath underwater, we just suck at it.

from what i've read, the lungs are able to deal with a certain amount of water being present. the water gets absorbed by corpuscles in the blood stream, picking up whatever O2 is present, then gets cycled out in the usual way. problem is, the body can deal with only so much water in the lungs... then it gets overloaded.


also, every human has gill slits and a tail up to a certain part of their development in the womb:


https://matthew2262.files.wordpress.com/2012/07/embryos2.jpg
ehhh. Do you have a source?
I'm skeptical because o2 transport across alveolar membranes is driven by a concentration gradient. O2 dissolved in the air we breathe makes it easier for O2 to diffuse into the mucosal film covering the membrane simply because of higher concentration, O2 dissolved in water messes with this concentration gradient for obvious reasons eg lower concentrations of dissolved O2, disruption of the mucosal layer. O2 transport does not happen through the absorption of water by blood cells. It happens through passive diffusion then biochemical interactions resulting in O2 binding to hemoglobin in blood.

[Patrick Chewing]

Nigha, do I look like SpongeBob?


You brothas just can't swim. It's alright.


Fly pelican fly.

[macmac]

Correct. I don't know where all these nancy boys got that I was not a believer in evolution. I just want to breathe underwater, bro. Let me breathe.

Notice how you don't have a gag reflex? That's because you've evolved from a family of c0cksuckers

Patrick chewing on a dikk

[Patrick Chewing]

Notice how you don't have a gag reflex? That's because you've evolved from a family of c0cksuckers

Patrick chewing on a dikk


Jesus Christ man there is no need for that language towards me.

[CavaliersFTW]

Correct. I don't know where all these nancy boys got that I was not a believer in evolution. I just want to breathe underwater, bro. Let me breathe.
Well then why seek an evolutionary answer that wouldn't exist? :lol

Here's what you're really looking for :cheers:

http://media.graytvinc.com/images/scuba+gear.jpg

We evolved a brain that solved the problem

[gigantes]

ehhh. Do you have a source?
I'm skeptical because o2 transport across alveolar membranes is driven by a concentration gradient. O2 dissolved in the air we breathe makes it easier for O2 to diffuse into the mucosal film covering the membrane simply because of higher concentration, O2 dissolved in water messes with this concentration gradient for obvious reasons eg lower concentrations of dissolved O2, disruption of the mucosal layer. O2 transport does not happen through the absorption of water by blood cells. It happens through passive diffusion then biochemical interactions resulting in O2 binding to hemoglobin in blood.
yes...... i do have sources, via the usual gaseous exits. possibly i can track them down... possibly the reverse. more importantly-- alternatively, could you describe the biochemical series of steps and reactions that happen when we drown?

shakehand lover! i haven't seen you for a long time. do you still play TT...?

[StephHamann]

I mean, you would think after millions of years of evolution and the billions who have probably drowned over time, you'd think that we would have evolved some sort of set of gills or something allowing us to breathe under water.

There is no clear evolutionary evidence that we ever did breathe underwater, so what gives?? When will our bodies evolve??

Thanks Obama

[I<3NBA]

at the point when we became too smart to invent tools, our bodies have stopped evolving to adapt to the environment.

instead of evolving to tolerate extreme cold, we wear winter clothes, etc.

also, evolution takes millions of years, and it would probably be our brains that would exhibit the most changes.

[CeltsGarlic]

cause its not super necessity for survival?

[CeltsGarlic]

U sleep in the bath?

[shlver]

yes...... i do have sources, via the usual gaseous exits. possibly i can track them down... possibly the reverse. more importantly-- alternatively, could you describe the biochemical series of steps and reactions that happen when we drown?

shakehand lover! i haven't seen you for a long time. do you still play TT...?
Quite a bit of things happen and a search on the pathophysiology of drowning should give you a more broad view of all the physiological reactions aspiration of water brings.
The most pertinent to your first post is how gas exchange works and how water in the lungs disrupts this process.
Gas exchange occurs in the alveoli where the alveolar membrane is covered by pulmonary surfactant. This surfactant is amphipathic. The hydrophilic lipid proteins adsorb to alveolar membranes, while the hydrophobic ends are situated to face the air. By the very nature of the hydrophobic groups facing the water; DO(dissolved oxygen) has a much smaller chance of diffusion which effect is also amplified by the low concentration of DO in water.
Some background reading:
http://people.eku.edu/ritchisong/301notes6.htm
Read the section on partial pressures.
https://en.wikipedia.org/wiki/Pulmonary_surfactant
http://emedicine.medscape.com/article/772753-overview#a3
Pathophysiology of drowning.

I do not play table tennis anymore.

[gigantes]

Quite a bit of things happen and a search on the pathophysiology of drowning should give you a more broad view of all the physiological reactions aspiration of water brings.
The most pertinent to your first post is how gas exchange works and how water in the lungs disrupts this process.
Gas exchange occurs in the alveoli where the alveolar membrane is covered by pulmonary surfactant. This surfactant is amphipathic. The hydrophilic lipid proteins adsorb to alveolar membranes, while the hydrophobic ends are situated to face the air. By the very nature of the hydrophobic groups facing the water; DO(dissolved oxygen) has a much smaller chance of diffusion which effect is also amplified by the low concentration of DO in water. I also retract my statement on disruption of the surfactant layer, hydrophobicity seems to prevent that from happening.
Some background reading:
http://people.eku.edu/ritchisong/301notes6.htm
Read the section on partial pressures.
https://en.wikipedia.org/wiki/Pulmonary_surfactant
http://emedicine.medscape.com/article/772753-overview#a3
Pathophysiology of drowning.

I do not play table tennis anymore.
well you can always pick it up again one day! i've gone ten years between that sort of thing, myself.

anyway, thank you. (actually now that i think upon it, i did see you in the dancing thread recently. rock on.)

btw, the type of article i've read has been of this (http://zidbits.com/2010/11/do-salt-and-fresh-water-drown-you-in-different-ways/) ilk. i personally extrapolated via that sort of thing and my own logic and experience that breathing underwater is -weakly- possible for humans.

but i guess if there's no O2 transfer at all, then i'm busted on that thought. the thing that really piqued me tho are the differences in drowning in fresh water vs. drowning in salt water.

any thoughts on that matter? if not, i will try to get through the stuff you linked; thank you.

[ISHGoat]

well you can always pick it up again one day! i've gone ten years between that sort of thing, myself.

anyway, thank you. (actually now that i think upon it, i did see you in the dancing thread recently. rock on.)

btw, the type of article i've read has been of this (http://zidbits.com/2010/11/do-salt-and-fresh-water-drown-you-in-different-ways/) ilk. i personally extrapolated via that sort of thing and my own logic and experience that breathing underwater is -weakly- possible for humans.

but i guess if there's no O2 transfer at all, then i'm busted on that thought. the thing that really piqued me tho are the differences in drowning in fresh water vs. drowning in salt water.

any thoughts on that matter? if not, i will try to get through the stuff you linked; thank you.

get this ****ing intelligent discussion out of here.

lets talk about REAL problems with our society such as feminism and affirmative action.

[shlver]

well you can always pick it up again one day! i've gone ten years between that sort of thing, myself.

anyway, thank you. (actually now that i think upon it, i did see you in the dancing thread recently. rock on.)

btw, the type of article i've read has been of this (http://zidbits.com/2010/11/do-salt-and-fresh-water-drown-you-in-different-ways/) ilk. i personally extrapolated via that sort of thing and my own logic and experience that breathing underwater is -weakly- possible for humans.

but i guess if there's no O2 transfer at all, then i'm busted on that thought. the thing that really piqued me tho are the differences in drowning in fresh water vs. drowning in salt water.

any thoughts on that matter? if not, i will try to get through the stuff you linked; thank you.
EDIT: I made a couple of mistakes in each post I made in this thread.
After double checking the link I provided, surfactant is disrupted and there are variable effects from differing salinity.

Fluid aspirated into the lungs produces vagally mediated pulmonary vasoconstriction and hypertension. Freshwater moves rapidly across the alveolar-capillary membrane into the microcirculation. Freshwater is considerably hypotonic relative to plasma and causes disruption of alveolar surfactant. Destruction of surfactant produces alveolar instability, atelectasis, and decreased compliance, with marked ventilation/perfusion (V/Q) mismatching. As much as 75% of blood flow may circulate through hypoventilated lungs.

Saltwater, which is hyperosmolar, increases the osmotic gradient and therefore draws fluid into the alveoli, diluting surfactant (surfactant washout). Protein-rich fluid then exudates rapidly into the alveoli and pulmonary interstitium. Compliance is reduced, the alveolar-capillary basement membrane is damaged directly, and shunting occurs. This results in rapid induction of serious hypoxia.