Question

how do the nails grow ?? i heard that it contain dead cells ??if its dead how it will grow ????

Answer 1

Nails start in the nail root, hidden under the cuticle. When cells at the root of the nail grow, the new nail cells push out the old nail cells. These old cells flatten and harden, thanks to keratin, a protein made by these cells. The newly formed nail then slides along the nail bed, the flat surface under your nails.
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Answer 2

Yes nails contains dead cells thats why we dont fell anything by our nails.It is made from dead cells and it grows because every day thousands of dead cells are formed by our body and these cells accumulate to form nails