Question

Nails are hardened _________ structure.

Answer 1

Nails:

1. Nails are the derivatives of epidermis.
2. They form a protective layer on the finger tips.
3. They are made up of keratin protein.
4. A nail has three parts: nail plate, nail root and nail matrix.

Keratin:

1. It is a hardened protein which forms the nail plate (outer part of nail).
2. Due to the presence of keratin protein, the nail plate becomes hard and brittle.

Final answer : Nails are hardened keratin structure.