The Largest Quantities of Keratin are Found in the Epidermal

Question

The largest quantities of keratin are found in the epidermal layer called the stratum
A) corneum.
B) lucidum.
C) basale.
D) granulosum.
E) spinosum.

Accepted Answer

The stratum corneum is the outermost layer of the epidermis and is composed primarily of keratin (a tough, fibrous protein). Therefore, it contains the largest quantities of keratin. The other options (stratum lucidum, basale, granulosum, and spinosum) are all layers of the epidermis as well, but they do not contain as much keratin as the stratum corneum.