Major Components of the Cutaneous Membrane A. identify the two major components of the cutaneous membrane.
- Identify the major functions of the integumentary system.
5.2
- Compare thin skin with thick skin.
- Identify the five layers of the epidermis (from superficial to deep)
C Dandruff is caused by excessive shedding of the cells from the outer layer of skin on the scalp. So, dandruff is composed of cells from which epidermal layer?
- A splinter that penetrates to the third layer of the epidermis of the palm is lodged in which layer?
5.3
- Name the two pigments contained in the epidermis.
B Why does exposure to sunlight or sunlamps darken skin?
C Why does the skin of a light-skinned person appear red during exercise in hot weather?
D Why is basal cell carcinoma considered less dangerous than malignant melanoma?
- Explain why a healthy 6-month-old might have yellow-orange skin.
5.4
A Describe the layers of the dermis.
B Predict the degree of scarring after the healing of a horizontal cut on the forehead just above the eyebrow.
5.5
A Distinguish among a first-degree, second-degree, and third-degree burn.
B Which type of burn usually requires skin grafting? Why?
C Describe the three types of skin grafts. Which one is best? Why?
D. A 32-year-old woman is admitted to the hospital with third-degree burns on her entire right leg, entire right arm, and the back of her trunk. Estimate the percentage of her body surface area affected by these burns.
5.6
- What are epidermal derivatives?
B Which exocrine glands are in the integument?
5.7
- Describe a typical strand of hair.
- What happens when an arrest or pili muscle contracts?
- Describe the four phases of the hair growth cycle
- Why is pulling a hair painful, yet cutting a hair is not?
5.8
A. Identify and describe the general functions of the exocrine glands found in the skin.
- Describe the secretory method and functions of sebum.
C Deodorants are used to mask the effects of secretions from which type of skin gland?
D Name the type of cell that assists the discharge of merocrine secretions and lists the glands in which such cells are present.
5.9
A Where does nail production occur?
- defines hyponychial.
C Why does the free edge of a nail appear white?
5.10
A Why does hair turn white or gray with age
B Why do people tolerate summer heat less well and become more susceptible to heat-related illness when they become older?
5.11
A List some hormones that are necessary for maintaining a healthy integument.
B Explain the relationship between sunlight exposure and vitamin D3.
C In some cultures, females must be covered from head to toe when they go outdoors. Explain why these women are at increased risk of developing bone problems later in life.
5.12
- Identify the first step in skin repair
B Describe granulation tissue
C Why can skin regenerate effectively even after considerable damage?
