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You need nails to provide a firm support for the sensitive skin on the fingertips. If you cut your fingernails too short you will notice how difficult it is to pick up small objects. Nails grow continuously from an area called the nail bed, or quick.

Because your nails are transparent, you can see right into the tissue below the nail, which is always pink because it contains blood. Nails grow at a rate of about 0.1 mm per day.

They are made of keratin, the same material as hair. Because read more...

Tags: fingertips, body, keratin

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