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This chapter introduces the concepts of differentiation, in which cells combine together to form tissues in order to perform specialized functions. Tissues are collections of specialized cells and cell products that perform a limited range of functions. There are four major tissue types in the body: epithelia, (layers of cells that form barriers); connective tissue, (fill internal spaces, provide support and a framework for communication within the body, and store energy); muscle tissue, (ability to contract and produce movement); and, neural tissue, (analyzes and conducts information from one part of the body to another, via electrical impulses. Also included in Chapter 4 is a review of how the major types of tissues respond to injuries and the effects of aging on tissues of the body. Review of Chapter Objectives (with page no. references to text): 1. Identify the four major tissue types of the body and their roles. (p. 84) 2. Discuss the types and functions of epithelial cells. (p. 84) 3. Describe the relationship between form and function for each epithelial type. (pp. 87–90) 4. Compare the structures and functions of various types of connective tissues. (pp. 92–98) 5. Explain how epithelial and connective tissue combine to form four different types of membranes, and specify the functions of each. (pp. 98–100) 6. Describe the three types of muscle and the special structural features of each. (pp. 100–102) 7. Discuss the basic structure and role of neural tissue. (pp. 102–103) 8. Discuss how tissues respond in a coordinated manner to maintain homeostasis. (p. 103) 9. Describe how aging affects the tissues of the body. (pp. 103–104)
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