Exam 5: The Integumentary System

The epidermis consists of five layers of cells, each layer with a distinct role to play in the health, well-being, and functioning of the skin. Which of the following layers is responsible for cell division and replacement?

The reason that the nail bed appears pink is the presence of a large number of melanocytes in the underlying dermis.

List the layers of the dermis and describe the functions of the tissue that makes up each layer.

The dermal folds that occur at or near joints where the dermis is tightly secured to deeper structures are called________.

The sebaceous glands are simple alveolar glands that secrete a substance known as sebum. The secretion of sebum is stimulated________ .

Melanoma is a form of skin cancer that arises from melanocytes. Melanoma is most common in Caucasians between 40 and 70 years of age. Explain why Caucasians would have a greater incidence of melanoma.

Which of the following glands secrete sebum, an oily like substance?

Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been previously stretched and/or torn?

Why is profuse sweating on a hot day good, and yet a potential problem?

Explain why soap that has an alkaline base may not be healthy for some patients to use daily.

How are burns commonly classified? Give an example.

Thick skin has a more extensive dermal layer than thin skin.

The ________are the small muscles located in the dermis that cause goose bumps.

Which of the following cells and their function are correctly matched?

Which of the following is a skin sensory receptor for touch?

The friction ridges seen in finger, palm and foot prints are different among various people but very similar between identical twins. This evidence suggests which of the following?

There are several reasons other than genetics for hair loss. Identify some of these other factors.

William has a cut that is superficial, painful but not bleeding. Based on this information, you would predict that the cut has penetrated to _________.

Pigment-producing cells in the epidermis are _________ .

Why are the apocrine sweat glands fairly unimportant in thermal regulation?