Question

which of the following is associated with the epidermis?
select all that apply
a keratinocytes move from the innermost layer to the surface
b has dead cells filled with keratin at the surface
c consists mainly of keratinocytes
d has stem cells as the innermost cells

Explanation:

• Option a: Keratinocytes are produced in the innermost layer (stratum basale) of the epidermis and move outward to the surface as they mature.
• Option b: The outermost layer of the epidermis (stratum corneum) is composed of dead keratinocytes filled with keratin.
• Option c: The epidermis is mainly made up of keratinocytes.
• Option d: The innermost layer of the epidermis (stratum basale) contains stem cells (keratinocyte stem cells).

Answer:

A. keratinocytes move from the innermost layer to the surface, B. has dead cells filled with keratin at the surface, C. consists mainly of keratinocytes, D. has stem cells as the innermost cells