MICROANATOMY

Detailed explanation-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.

Detailed explanation-2: -Toenails may curl upward for a number of reasons: This could be your toenails’ natural growth pattern. Your shoes could be pushing at the tips of your toenails. Your toenails could be affected by profuse foot sweat.