New Mexico Cosmetology Practice Exam

What is the function of the dermis layer of the skin?

1. Provides strength, elasticity, and nourishment to the skin

2. Acts as a barrier to prevent water loss

3. Regulates body temperature and sweat production

4. Contains nerve endings for sensation

The correct answer is: Provides strength, elasticity, and nourishment to the skin

The dermis layer of the skin plays a crucial role in providing strength, elasticity, and nourishment. This layer is situated beneath the epidermis and is primarily made up of connective tissue, which contains collagen and elastin fibers. These fibers contribute to the skin's firmness and ability to stretch and rebound, thereby maintaining the skin's structural integrity. Furthermore, the dermis houses various blood vessels, which supply nutrients and oxygen to the skin while removing waste products. This nourishment is essential for the overall health of the skin, including its healing processes. The presence of other components such as hair follicles, sweat glands, and sebaceous glands, further reinforces the dermis’s role in supporting skin function and health. The other functions mentioned in the other choices are indeed significant aspects of skin physiology but are not the primary role of the dermis. For example, while the epidermis plays a key role in acting as a barrier to prevent water loss, and other layers help regulate body temperature, the specific function of providing strength, elasticity, and nourishment distinctly defines what the dermis accomplishes. Additionally, while the dermis does contain nerve endings for sensation, this is part of a broader network of skin functions, further highlighting that its main purpose is related to structural support