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

Question

Quizplus · Accepted Answer

The stratum corneum is the outermost layer of the epidermis, composed of flattened, keratin-filled cells that provide a protective barrier for the skin. Therefore, large quantities of keratin are found in this layer. The stratum lucidum is a thin, translucent layer found only in some areas of the body, such as the palms and soles, and is not primarily composed of keratin. The stratum basale, granulosum, and spinosum are all lower layers of the epidermis where cells are actively dividing and differentiating, but they do not contain as much keratin as the stratum corneum.

Large Quantities of Keratin Are Found in the Epidermal Layer