ANATOMY

Detailed explanation-1: -Keratinocytes (ker-uh-TIH-no-sites) make keratin, a type of protein that’s a basic component of hair, skin, and nails. Keratin in the skin’s outer layer helps create a protective barrier.

Detailed explanation-2: -The epidermal cells are:-1-the keratinocytes: compose most of the epidermis. They produce a protein: the keratin that helps waterproof the skin and that protects the skin and the underlying tissues from heat, microbes, abrasion and chemicals.

Detailed explanation-3: -Keratinocytes differentiate from epidermal stem cells in the lower part of the epidermis and migrate towards the surface, finally becoming corneocytes and eventually be shed off, which happens every 40 to 56 days in humans.

Detailed explanation-4: -Hair is composed of 95% keratin, a fibrous and helical protein (in the shape of a helix), which is part of the composition of the skin and of all the phanera (hair, nails, etc.). Synthesized by keratinocytes, keratin is insoluble in water, thus ensuring waterproofing and protection for hair.

Detailed explanation-5: -Keratinocytes. Keratinocytes are the most abundant type of skin cell found in the epidermis and account for around 90-95% of the epidermal cells. They produce and store a protein called keratin, a structural protein that makes skin, hair, and nails tough and waterproof.