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 continues to use clay in different colors to represent the cells of the skin; in the dermis, she includes models of _____.

A) Melanocytes
B) Langerhans cells
C) Fibroblasts
D) Keratinocytes

Answer 1

Hannah should include models of fibroblasts in the dermis layer of her three-dimensional skin model, as fibroblasts are responsible for producing the tough connective tissues that provide skin strength and flexibility. The correct option is c.

Step-by-step explanation:

In constructing a three-dimensional model of the skin, when building the dermis layer, Hannah should include models of fibroblasts.

Fibroblasts are a type of cell found within the dermis that are responsible for producing the tough connective tissues which give the skin its strength and flexibility.

These cells secrete collagen and elastin fibers that form the extracellular matrix. In addition to fibroblasts, the dermis also houses other structures such as blood vessels, sensory receptors, hair follicles, and oil and sweat glands.

The list of options provided - melanocytes, Langerhans cells, fibroblasts, and keratinocytes - represent various cell types found within the skin layers.

Melanocytes and Langerhans cells are found in the epidermis; keratinocytes are the primary cell type of the epidermis, and fibroblasts are found in the dermis. Therefore, the correct answer is Fibroblasts (Option C).

Since the question specifically asks about the dermis, fibroblasts are the appropriate cells to model as they are critical for the structural integrity of the dermis. The correct option is c.