HISTOLOGY_revised

HISTOLOGY_revised - HISTOLOGY and ENDOCRINOLOGY AVS350L...

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    HISTOLOGY and  ENDOCRINOLOGY AVS350L
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    Five Types of Tissues 1. Epithelial 1. Connective and Supporting 1. Muscle 1. Nervous 2. Vascular tissue
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    Epithelium Is a tissue composed of layers of cells Lines both the outside of the body (skin),  the  inside cavities, and lumen of bodies Classified by the number of cell layers present One or more layers
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    Functions Protection Sensation Secretion Absorption Excretion Diffusion Cleaning Reduces Friction
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    Classifications for Epithelial Cells Single versus Multiple  Layers Simple epithelium One cell layer thick Stratified epithelium Two or more cells thick Pseudostratified with cilia
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    Pseudostratified columnar
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    Classification of Epithelial Cells Shape of Cells SQUAMOUS or “Flattened” CUBODIAL or “Square” COLUMNAR or “Rectangular”
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    Epithelium Simple Squamous Epithelium Site of diffusion or filtration Lining of blood vessels,heart, lymphatic ducts,  bone marrow  (“endothelium”) Lining of peritoneal, plural and pericardial  cavities—” mesothelium Cells of Bowman’s capsule of kidney, and of  lung alveoli
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    Simple Squamous Epithelium Simple Squamous Epithelium nuclei
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    Epithelium Simple cuboidal epithelium may have secretory or absorptive functions lining of glands and tubules kidney tubules, salivary glands, thyroid gland
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    Simple cuboidal
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    Cuboidal Epithelium
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HISTOLOGY_revised - HISTOLOGY and ENDOCRINOLOGY AVS350L...

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