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Q.

Why do your fingertips go wrinkly in water?

Tags: health, science, environment
Asked by ankit shivam, 24 Sep '12 02:08 pm
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Answers (4)

 
1.

One of the extraordinary properties of skin is its ability to maintain its integrity even after hours of soaking in a swimming pool or a hot bath.
This soaking makes the outermost layer of skin double or triple in size as its cells swell, causing our skin to buckle and wrinkle.
However as we age, our skin becomes thinner so even though this outer layer still swells just as much, there is less of it to start with and therefore less wrinkling.
The reason skin gets wrinkly instead of simply dissolving away is because of the complex structure of a protein called keratin in the outermost layer of skin cells, says mathematician and physicist Dr Myfanwy Evans, from the University of Erlangen-Nrnberg in Germany.
The keratin filaments in these outermost dead cells called corneocytes are arranged in a kind of fibrous weaving.
"They form this lovely geometric array of fibres and using this specific geometry you can get really nice mechanics about how the corneocyte expands, fills with wa ...more
Answered by Ataur Rahman, 24 Sep '12 02:13 pm

 
  
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2.

Osmosis is the process by which water will move through a semi-permeable membrane (in this case, your skin) from one area of higher water concentration to another area of lower water concentration, and since there is a higher concentration of water in the bathtub than in your skin, the water will flow into the outermost layer of your skin, causing the cells that make up this layer to swell. In order to compensate for this increase in surface area, your skin wrinkles.
Answered by anil garg, 26 Sep '12 12:55 am

 
  
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3.

It shrinks due to cold
Answered by iqbal seth, 24 Sep '12 02:10 pm

 
  
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