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by ptrask on May 5th, 2009
There are a number of capillaries close underneath the nail. When you press on the nail, it forces the blood out of the capillaries, and the nail appears lighter. When you release it, the blood flows back and the nail "pinks up." When I used to work as an EMT, that was an evaluation tool we were taught. When you press on someone's nail, it should pink up again in less than the time it takes to say capillary refill. Otherwise, there is a circulation problem.
by RC loves ice cream on May 5th, 2009
Any part of your flesh does that. When you press your nail you're pressing the flesh underneath it. That pushes the blood out of that part temporarily.
by Anonymous on May 5th, 2009
When you press down on your nail or any other part of your body, the blood vessels are compressed and are forced away from the pressure.
by MrsPurple on May 5th, 2009
They are not nails that turn pale - its the flesh under them that gets pale. The blood is squeezed away from the place you press it. Not right?
by Drastic on May 5th, 2009
Because you're pushing the blood away.
by 1858 Remington 1-21-13 on May 5th, 2009
Because you're pressing the blood away. :-)
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