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(News.com.au)   Why do your fingers wrinkle in water? Now here's the science   (news.com.au) divider line 26
    More: Interesting, washing up, Newcastle University  
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2482 clicks; posted to Geek » on 09 Jan 2013 at 8:57 AM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-01-09 08:19:52 AM  
My parents told me it was because the water was causing accelerated aging, and every time I showered/bathed I would age by about three days.
 
2013-01-09 08:54:41 AM  
I didn't see it mentioned in the article, but in other articles like this that have been submitted, it's been said that your skin wont wrinkle if you have nerve damage that prevents your brain from feeling the water. That suggests that it's a deliberate physiological change initiated by your brain.
 
2013-01-09 09:00:42 AM  
Well, I don't know why it happens, but I can tell you that ironing them smooth again is the wrong thing to do.
 
2013-01-09 09:04:33 AM  

Cythraul: My parents told me it was because the water was causing accelerated aging, and every time I showered/bathed I would age by about three days.


That explains the smell.
 
2013-01-09 09:09:19 AM  

Cythraul: My parents told me it was because the water was causing accelerated aging, and every time I showered/bathed I would age by about three days.


They told you that because you were spending too much time playing with yourself in the shower and they couldn't afford the hot water.
 
2013-01-09 09:17:08 AM  
Why do your fingers wrinkle in water? Now here's the science

Because you touch yourself at night, subby... in the shower.
 
2013-01-09 09:34:34 AM  
assets.amuniversal.com
 
2013-01-09 09:49:19 AM  
I always just thought it was nature's way of turning my normal slicks into treaded tires for better grip.
 
2013-01-09 09:51:54 AM  

SomeoneDumb: I always just thought it was nature's way of turning my normal slicks into treaded tires for better grip.


Did you read the article?
 
2013-01-09 10:13:45 AM  
Is it the network of collagen fibers in the skin expanding as water is absorbed into the lattice? I bet it's the network of collagen fibers in the skin expanding as water is absorbed into the lattice. Probably because this is basic high school biology that has been known for a very long time.
 
2013-01-09 10:17:42 AM  

Cythraul: SomeoneDumb: I always just thought it was nature's way of turning my normal slicks into treaded tires for better grip.

Did you read the article?


Skimmed it, read a similar one a couple years ago.
 
2013-01-09 10:29:03 AM  
FTA: Wrinkles form when blood vessels under constrict, shrinking the fingertips and pulling in the skin.

Under constrict? That made my brain hurt.
 
2013-01-09 10:42:00 AM  
This supports my theory that our tongues get wet so that they are better able to lick postage stamps. What's a postage stamp, you ask? Exactly!
 
2013-01-09 10:53:28 AM  
The Discovery article throws in some added awkward sexual frustration by the author.
 
2013-01-09 10:57:53 AM  
Isn't it also related to how hydrated you are? If you're more hydrated it takes much longer to get pruny, or is that just me?
 
2013-01-09 11:21:52 AM  
Osmosis?
 
2013-01-09 11:28:07 AM  
My fingers wrinkled one time when my wife was at work and didn't get the dishes done.
 
2013-01-09 12:36:29 PM  

Honest Bender: I didn't see it mentioned in the article, but in other articles like this that have been submitted, it's been said that your skin wont wrinkle if you have nerve damage that prevents your brain from feeling the water. That suggests that it's a deliberate physiological change initiated by your brain.


This. I was looking forward to the science, and there was hardly any.

Bad Subby, Bad.
 
2013-01-09 12:42:01 PM  
SHRINKAGE!
 
2013-01-09 01:06:18 PM  

Honest Bender: I didn't see it mentioned in the article, but in other articles like this that have been submitted, it's been said that your skin wont wrinkle if you have nerve damage that prevents your brain from feeling the water. That suggests that it's a deliberate physiological change initiated by your brain.


Skin wrinkling can be suppressed by peripheral nerve damage, but it is thought to be a sympathetic-mediated response, not CNS mediated. Fingers with nerve injuries or which have undergone deliberate sympathectomy will not wrinkle normally upon immersion.

The fingertip pulp contains a large number of glomus bodies, which are big juicy balls of small vessels. It is thought that vessel constriction under the influence of sympathetic nerves reduces blood flow, which causes the volume of the glomus bodies to reduce. Because the skin of the pulp of the fingertip is tethered, the reduction in volume exaggerates the natural wrinkling of the fingertip along the contour of the dermal ridges.

i.imgur.com

i.imgur.com

Source

Some of the wrinkling must be due to non-sympathetic factors as well. This study described the effects of fresh and salt water of varying temperatures upon the wrinkling of cadaveric hands. Unless they used zombie specimens, it's safe to say that sympathetic tone had nothing to do with the wrinkling response. Other studies have described the effects of temperature, pH, and tonicity of the solution upon the wrinkling response.

Anyway, that's what scienc-y people say.

The truth is, it happens because Jesus wills it.

/hand specialist
//getting a kick out of these replies
 
2013-01-09 01:30:54 PM  
www.truthdig.com
 
2013-01-09 02:16:16 PM  
How It Really Works:
Skin: I am moist. Where is the body most moist? The crotch. Therefore, I am a ballsack, and I must wrinkle.
 
2013-01-09 02:16:40 PM  

PanicMan: Osmosis?


That was my guess, but the article claims vasoconstriction. I'd like a rematch using isotonic saline.
 
2013-01-09 03:18:27 PM  

AndreMA: PanicMan: Osmosis?

That was my guess, but the article claims vasoconstriction. I'd like a rematch using isotonic saline.


Fingertip skin wrinkling - the effect of varying tonicity
N Tsai, S Kirkham - J Hand Surg [Br] June 2005 30: 273-275

Fingertip skin wrinkling after prolonged immersion in water is a well-recognized phenomenon, whereas a denervated digit does not exhibit normal skin wrinkling while a finger with a regenerated or repaired nerve shows at least partial reappearance of wrinkling. This is the basis for the bedside immersion-wrinkling test of autonomic digital nerve function. The exact mechanism of fingertip skin wrinkling is still subject to controversy. The purpose of this study was to investigate the relationship between the tonicity of a solution and the time elapsed to skin wrinkling. Fourteen healthy volunteers (28 hands) were recruited for investigation. We submerged all 28 hands in solutions of varying tonicity while maintaining all other parameters constant. We found that increased tonicity significantly slowed the time to wrinkling (TTW). Hypotonic solutions such as water should be used when performing clinical bedside testing for autonomic digital nerve function.

ars.els-cdn.com
Fig. 1. Time to wrinkling and 95% confidence interval for right and left hands in four different solutions.
/still getting a kick
 
2013-01-09 10:25:11 PM  

Cythraul: My parents told me it was because the water was causing accelerated aging, and every time I showered/bathed I would age by about three days.


No wonder I look so young.

er, hey wait a minute....
 
2013-01-10 05:59:39 AM  
i had to go through water survival training with the usaf. they showed some photos of people who had had to survive out in open water for extended periods of time. not pretty. one case in particular of someone who had gone several days out in the ocean and his skin was just hanging off him. really gnarly looking shiat.
 
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