differences between left and right hemispheres. 1  for many functions, there are no substantial differences between the left and right hemispheres. 2  lateralization of function is statistical rather than absolute. 3  tendencies:
When the nail plate separates from the nail bed, it causes a white discoloration. This is called onycholysis. This can be due to infection, trauma, or products used on the nails. Other causes for onycholysis include psoriasis and thyroid disease. Pitting. Pitting refers to small depressions, or little pits in the nail.
Composition: Nails are layers of keratin, a protein that's also found in our skin and hair, and. are made up of six parts. The nail plate is the hard, protective piece and the most visible part. The skin around the nail plate is called the nail folds, and the nail bed is the skin underneath. the nail plate. The whitish crescent moon at the nail base, under the nail plate, is called the. lunula, and the tissue overlapping the nail at the base is the cuticle. Your nail grows from the matrix, an area under the protective cuticle at the base of the nail. bed.