The Layer of Epidermis Where Keratohyalin Crosslinks Keratin Fibers Is

Question

The layer of epidermis where keratohyalin crosslinks keratin fibers is the
A) stratum spinosum.
B) stratum corneum.
C) stratum granulosum.
D) stratum lucidum.
E) stratum basale.

Accepted Answer

The layer of epidermis where keratohyalin crosslinks keratin fibers is the stratum granulosum. This layer is where the keratinocytes begin to flatten out and produce the protein keratin. The keratinocytes also begin to produce keratohyalin granules, which crosslink the keratin fibers together. This process helps to form a protective barrier on the surface of the skin.