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CHAPTER 6: SKIN AND THE INTEGUMENTARY SYSTEM OBJECTIVES: 1. Explain why the skin is called the cutaneous membrane. 2. Name the layers of the skin, describe the structure (tissues) of each, and name a general function of each. 3. Discuss the four cell types present in the epidermis. 4. List the four/five layers of the epidermis and explain the process of keratinization. 5. Explain the protective role of keratin, and in turn, the epidermis. 6. Name the pigment responsible for skin and hair color, and explain how people of different races (i.e. and skin color) differ in regards to it, and the cell that produces it. 7. List some factors that promote the production of melanin (besides DNA). 8. Distinguish between the papillary layer and reticular layer of the dermis, and locate the appropriate sensory receptor in each of these layers. 9. Compare and contrast Meissner's and Pacinian Corpuscles in terms of their structure, function, and location. 10. Describe the structure and function of the subcutaneous layer. 11. Explain what is meant by the term epidermal derivative, and list four examples. 12. Describe the general structure of a hair follicle and identify two other structures that are usually associated with them. 13. Distinguish between merocrine (eccrine) and apocrine sweat glands in terms of structure, secretion content and odor, activation, and major body locations. 14. Name two modified apocrine glands of the skin. 15. Describe the structure, function, secretion, and location of sebaceous glands. 16. Discuss the many functions of skin. 17. Describe some major homeostatic imbalances of the skin. 18. Sketch a typical layer of skin and label each layer and all structures. Then in complete sentences, discuss the function of each layer and structure. 6-1
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CHAPTER 6: SKIN AND THE INTEGUMENTARY SYSTEM I. INTRODUCTION The integumentary system is the first body system studied. Before we begin any study of a body system, we will first think about the organs/tissues that work together to perform the function(s) of that system. The integumentary system consists of a major organ, skin, and many epidermal derivatives (accessory organs), which include hair follicles, sebaceous glands, sweat glands, and nails. In addition, the organs of the integumentary system are composed of many different tissues that perform common functions. Look at Figure 6.1, page 159 and Figure 6.2, page 160, and name as many different tissues as you can. These tissues include stratified squamous epithelium, glandular epithelium, dense irregular CT, smooth muscle tissue, adipose tissue, and nervous tissue. The functions that these tissues collectively perform are many. Functions of the skin include protection, excretion, regulation of body temperature, sensory reception, immunity, synthesis of Vitamin D, and blood reservoir.
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This note was uploaded on 02/06/2012 for the course ANA 2310 taught by Professor Katy during the Spring '11 term at University of Maryland Eastern Shore.

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