Structural Organization

Structural Organization - Structural Organization Tissue I...

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Structural Organization Tissue I Tissue—a group of closely associated cells performing a restricted range of functions. Overview of Tissues Tissue Type Nervous Muscle Epithelial Connective Primary Function Information Processing Contraction to Generate Force Cover Exposed Surfaces Structure and Support Cell Types Neurons Glia Smooth Cardiac Skeletal Squamous Cuboidal Columnar Transitional Glandular Fibroblasts WBC’s Mast Cells Plasma Cells Macrophages Adipocytes Fibers (Minimal) (Minimal) Basement Membrane Collagen Reticular Elastic Fluids Nutrient-Rich, Aqueous (Minimal) (Limited) Depends on Type of Connective Tissue I. Classes of Tissue A. Nervous Tissue
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1. Neurons a. Chemical and electrical transmission of information 2. Glia
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a. Support and repair B. Muscle 1. Function: Contracts to generate force 2. Types a. Skeletal i. Striated ii. Multinucleated iii. Voluntary control b. Smooth i. Non-striated ii. Uninucleated iii. No voluntary control c. Cardiac i. Striated ii. Intercalated disks iii. No voluntary control C. Epithelial
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1. Functions: a. Protection b. Absorption c. Filtration d. Secretion 2. Characteristics a. Cellularity: close-packed cells with limited extracellular material b. Cellular connections i. Tight junctions ii. Desmosomes c. Cellular organization i. Apical surface in contact with fluid or air ii. Basal cell layer in contact with basement membrane (lamina) d. Connective tissue support i. All epithelial sheets are supported by connective tissue ii. Deep to the basement lamina is a layer of connective tissue—reticular lamina iii. Basement lamina + reticular lamina = basement membrane
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e. Innervated—receives nervous innervation
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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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Structural Organization - Structural Organization Tissue I...

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