Question

As a student in an esthetic program, Hannah is tasked with building a three-dimensional model of the layers of the skin. Her model must include captions describing each skin layer and connect skin histology and physiology to esthetics. Hannah visits a craft store to purchase supplies from which she will construct her model.

Hannah adds a caption to the stratum germinativum to indicate that cells in this active layer _____.

a) Undergo apoptosis
b) Produce melanin
c) Divide by mitosis
d) Differentiate into keratinocytes

Answer 1

In the stratum germinativum, cells actively divide by mitosis, leading to the regeneration of the epidermis.

Step-by-step explanation:

Hannah should add a caption to the stratum germinativum to indicate that cells in this active layer divide by mitosis. The stratum germinativum, also known as the stratum basale, contains basal cells which are constantly going through mitosis to produce new cells. As new cells are formed, the existing cells are pushed superficially away from the stratum basale. This layer is essential for the regeneration of the epidermis, making it highly relevant in the field of esthetics for understanding skin renewal and repair.