Exam 5: The Integumentary System

What is the most important role of the arrector pili muscles in humans?

During the regressive phase of hair growth, the matrix is inactive and the follicle atrophies.

The layer of the epidermis immediately under the stratum lucidum in thick skin is the stratum _ .

The Waldorf family was caught in a fire but escaped. Unfortunately, the father and daughter suffered burns. The father had second- degree burns on his entire chest, abdomen, and both arms, and third- degree burns on his entire left lower extremity. The daughter suffered first- degree burns on her whole head and neck and second- degree burns throughout both lower extremities. a. What percentage of the father's body was covered by burns? b. What percentage of the daughter's body received first- degree burns? c. What part of the daughter's body has both the dermis and epidermis involved? d. The father experiences a good deal of pain in the area of the chest and abdomen, but little pain in the leg. Why?

Why should incisions be made parallel to cleavage lines produced by collagen fiber bundles rather than perpendicular to the lines?

What are vellus hairs?

Acne is a disorder associated with .

Figure 5.1Using Figure 5.1, match the following: -What complications might be anticipated from the loss of large areas of skin surfaces?

Figure 5.1Using Figure 5.1, match the following: -Pigment- producing cells in the epidermis are .

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

Burns that result in injury to the epidermis and the upper regions of the dermis is called a burn.

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

The dermis has two major layers. Which layer constitutes 80% of the dermis and is responsible for the tension lines in the skin?

Figure 5.1Using Figure 5.1, match the following: -Why is skin not considered an absolute heat barrier for the body?

Apocrine glands, which begin to function at puberty under hormonal influence, seem to play little role in thermoregulation. Where would we find these glands in the human body?

What is the function of skin dermal folds and deep skin creases?

Figure 5.2Using Figure 5.2, match the following: -Papillary layer of the dermis

What are the functions of the papillary layer of the skin?

What is the first threat to life from a massive third- degree burn?

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