Exam 5: The Integumentary System

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

The stratum corneum (outermost layer of skin) is a zone of approximately four layers of viable cells that are able to synthesize proteins that keep the outer layer of skin smooth and soft.

Burns are devastating and debilitating because of loss of fluids and electrolytes from the body. How do physicians estimate the extent of burn damage associated with such dangerous fluid loss?

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?

Match the following: A) Vellus B) Stratum basale C) Sudoriferous glands D) Stratum corneum -The glands that serve an important function in thermoregulation.

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

Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin?

The outermost sheath of a hair follicle is the connective tissue root sheath.

Figure 5.1 Using Figure 5.1, match the following: -Sudoriferous gland.

What are vellus hairs?

Robert, a surfer, has a mole that has changed its shape and size. His doctor, applying the ABCD(E) rule, diagnosed a melanoma. What do the letters ABCD(E) represent?

The pinkish hue of individuals with fair skin is the result of the crimson color of oxygenated hemoglobin (contained in red blood cells) circulating in the dermal capillaries and reflecting through the epidermis.

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

Acne is a disorder associated with ________.

Match the following: A) Vellus B) Stratum basale C) Sudoriferous glands D) Stratum corneum -The layer of the epidermis where the cells are considered protective but nonviable.

Name the layers of the epidermis in order from the surface down.

The composition of the secretions of the eccrine glands is ________.

Pigment-producing cells in the epidermis are ________.

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?

How are burns commonly classified? Give an example.