Question

while studying how the skin heals after a cut, oliver learns that there is a layer where constant cell division takes place to replace lost or damaged cells. which layer is this? stratum basale stratum corneum arrector pili dermis

Explanation:

To solve this, we analyze each option:

• Stratum Basale: It's the deepest layer of the epidermis where constant cell division (mitosis) occurs to produce new cells that replace lost/damaged ones.
• Stratum corneum: It's the outermost layer of dead, keratinized cells, no cell division here.
• Arrector pili: A small muscle attached to hair follicles, not involved in skin cell replacement.
• Dermis: The layer below the epidermis, composed of connective tissue, not the site of constant cell division for skin cell replacement.

So the correct layer is Stratum Basale.

Answer:

A. Stratum Basale