Question

when the skin is subjected to mechanical stresses, the stem cells divide more rapidly and the depth of the epithelium increases in which layer of the epidermis?
options: stratum spinosum, stratum basale, stratum corneum, stratum granulosum, i dont know yet

Explanation:

The stratum basale (basal layer) contains stem cells (keratinocyte stem cells) that divide. Mechanical stress triggers faster division here, increasing epithelial depth. Other layers (spinosum, granulosum, corneum) don't have dividing stem cells for this process.

Answer:

B. Stratum basale