Keratinization

Cells divide by mitosis

Keratin fibers and lamellar bodies accumulate

Keratohyalin granules Accumulate, lamellar bodies release lipids, cells die, hard protein envelope

Cells are dead, contain keratohyalin granules

Cells are dead, have a hard protein envelope, contain keratin, surrounded by lipids.

Stratum Basale

Stratum Spinosum

Strayum Granulosum

Stratum Lucidum

Stratum Corneum

1

5

4

3

2

KERATINIZATION