NEET PG DENTAL EXAM

Detailed explanation-1: -Keratin (/ˈkɛrətɪn/) is one of a family of structural fibrous proteins also known as scleroproteins. Alpha-keratin (-keratin) is a type of keratin found in vertebrates. It is the key structural material making up scales, hair, nails, feathers, horns, claws, hooves, and the outer layer of skin among vertebrates.

Detailed explanation-2: -Keratin is the major structural fibrous protein to form hair, wool, feathers, nails, and horns of many kinds of animals, and has a high concentration of cysteine, 7 to 20% of the total amino acid residues, that form inter-and intra-molecular disulfide bonds (Dowling et al., 1986).

Detailed explanation-3: -This layer is composed of flat, and tightly packed dead cells called keratinocytes. The layer of keratinocytes forms a waterproof barrier that protects the underlying skin layers from the penetration of external water.