Z331 Fall 2010 Ecampus Week 9 and 10 Integument Lecture 2 Dermis Posted

Z331 Fall 2010 Ecampus Week 9 and 10 Integument Lecture 2 Dermis Posted

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Weeks 9 and 10: Lecture 2: Chapter 5:  The Integumentary System: The Dermis
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The Dermis Anchors epidermal accessory  structures Has 2 components: superficial papillary layer – areolar  CT deep reticular layer – dense  irregular CT Figure 5–1, 154
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Remember: Connective Tissues?  (p118) Support, surround, interconnect Provide structure  Store energy  Transport materials  Protect & defend
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Characteristics of Connective  Tissues Specialized cells Vary depending on type of CT Matrix (extracellular components) majority of tissue volume Solid - protein fibers Fluid - ground substance fills spaces between cells Figure 4–8, p119
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Classification of Connective Tissues Connective tissue proper: connect and protect Fluid connective tissues: transport Supportive connective tissues: structural strength
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Cell Types of CTP Fibroblasts Macrophages Adipocytes Mesenchymal  cells Melanocytes Mast cells Lymphocytes Microphages Figure 4–8, p119
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Fibers in CTP Collagen  Reticular Elastic Figure 4–8, p119
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Z331 Fall 2010 Ecampus Week 9 and 10 Integument Lecture 2 Dermis Posted

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