Chapter 4 Objectives
Body membranes, which cover surfaces, line body cavities, and form protective (and often lubricating) sheets around organs, fall into two major groups. There are (1) epithelial membranes, which include the cutaneous, mucous, and serous membranes, and (2) connective tissue membranes, represented by synovial membranes. The cutaneous membrane, generally called the skin or integumentary system, will receive most of our attention in this chapter, but first we will consider the other body membranes.

Objective Checklist

Classification of Body Membranes

• List the general functions of each membrane type-cutaneous, mucous, serous, and synovial-and give its location in the body.
• Compare the structure (tissue makeup) of the major membrane types.

Integumentary System (Skin)

• List several important functions of the integumentary system and explain how these functions are accomplished.
• When provided with a model or diagram of the skin, recognize and name the following skin structures: epidermis, dermis (papillary and reticular layers), hair and hair follicle, sebaceous gland, and sweat gland.
• Name the layers of the epidermis and describe the characteristics of each.
• Describe the distribution and function of the epidermal derivatives-sebaceous glands, sweat glands, and hair.
• Name the factors that determine skin color and describe the function of melanin.
• Differentiate between first-, second-, and third-degree burns.
• Explain the importance of the "rule of nines."
• Summarize the characteristics of basal cell carcinoma, squamous cell carcinoma, and malignant melanoma.

Developmental Aspects of Skin and Body Membranes

• List several examples of integumentary system aging.

Lecture Outline

1. CLASSIFICATION OF BODY MEMBRANES (pp. 96-98)
1. Epithelial Membranes (pp. 96-98)
1. Cutaneous Membrane
2. Mucous Membranes
3. Serous Membranes
2. Connective Tissue Membranes (p. 98)
2. INTEGUMENTARY SYSTEM (SKIN) (pp. 98-111)
1. Basic Skin Functions (pp. 98-99)
2. Structure of the Skin (pp. 99-102)
1. Epidermis
2. Dermis
3. Skin Color (pp. 102-103)
4. Appendages of the Skin (pp. 103-106)
1. Cutaneous Glands
1. Sebaceous (Oil) Glands
2. Sweat Glands
2. Hairs and Hair Follicles
3. Nails
5. Homeostatic Imbalances of the Skin (pp. 107-111)
1. Infections and Allergies
1. Athlete's Foot
2. Boils and Carbuncles
3. Cold Sores
4. Contact Dermatitis
5. Impetigo
6. Psoriasis
2. Burns
3. Skin Cancer
1. Basal Cell Carcinoma
2. Squamous Cell Carcinoma
3. Malignant Melanoma
3. DEVELOPMENTAL ASPECTS OF SKIN AND BODY MEMBRANES (pp. 111)