false

the epithelium of the nail , especially its posterior part in the region of the nail bed. this definition came out of a health dictionary!!

!

Well, the part of the nail that we actually see is called the nail plate, and the skin is the cuticle. Beneath it is the nail bed and the matrix, and beneath those is the skin called the hyponychium. I don't know which three structures you actually need; I'm sure you could Google images 'the anatomy of a nail' and get a good diagram that could explain it better.

The nail bed is part of the nail matrix called the sterile matrix. It extends from the edge of the germinal matrix, or lunula, to the hyponychium. The nail bed contains the blood vessels, nerves, and melanocytes, or melanin-producing cells. As the nail is produced by the root, it streams down along the nail bed, which adds material to the undersurface of the nail making it thicker. It is important for normal nail growth that the nail bed be smooth. If it is not, the nail may split or develop grooves that can be cosmetically unappealing.