Chap05outline - Chapter 5 Tissues 5.1 Introduction(p 97 Table 5.1 A Cells are arranged in tissues that provide specific functions for the body B

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Chapter 5 - Tissues 5.1 Introduction (p. 97; Table 5.1) A. Cells are arranged in tissues that provide specific functions for the body. B. Cells of different tissues are structured differently, which leads to their differences in function. C. The tissues of the human body include four major types. 5.2 Epithelial Tissues (p. 97; Table 5.2) A. General Characteristics (p. 97) 1. Epithelial tissue is widespread throughout the body, covers organs, and lines body surfaces. 2. Epithelial tissues are anchored to a basement membrane, are made up of tightly packed cells containing little intercellular material, generally lack blood vessels, and are replaced frequently. 3. They function in protection, secretion, absorption, excretion, and sensory reception. B. Simple Squamous Epithelium (p. 97; Fig. 5.1) 1. Simple squamous epithelium is made up of a single layer of thin, flattened cells. 2. It functions in the exchange of gases in the lungs and lines blood and lymph vessels as well as body cavities. C. Simple Cuboidal Epithelium (p. 97; Fig. 5.2) 1. Simple cuboidal epithelium consists of a single layer of cube-shaped cells with centrally located nuclei. 2. It functions in secretion and absorption in the kidneys, and in secretion in glands. D. Simple Columnar Epithelium (p. 98; Fig. 5.3) 1. Simple columnar epithelium is made up of a row of elongated cells whose nuclei are all located near the basement membrane. 2. It lines the uterus, stomach, and intestines where it protects underlying tissues, secretes digestive fluids, and absorbs nutrients. 3. In the intestine, these cells possess microvilli that increase the surface area available for absorption. 4. Mucus-secreting goblet cells can be found among columnar cells. E. Pseudostratified Columnar Epithelium (p. 99; Fig. 5.4) 1. These cells appear layered due to the varying positions of their nuclei within the row of cells, but are not truly layered. 2.
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This note was uploaded on 05/20/2010 for the course PHYSIOLOGY Physiology taught by Professor Holes during the Spring '10 term at Open Uni..

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Chap05outline - Chapter 5 Tissues 5.1 Introduction(p 97 Table 5.1 A Cells are arranged in tissues that provide specific functions for the body B

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