Unit 01 Flashcards - Primary Tissue Types 1. Epithelial...

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Primary Tissue Types
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1. Epithelial tissue – covers surfaces, lines cavities, and forms glands 2. Connective tissue – the most abundant primary tissue in the body, connects different tissues, provides a framework, resists pulling forces, and protects other tissues 3. Muscle tissue – causes movement 4. Nervous tissue – receives and generates nerve impulses
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Organs
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Formed from two or more different tissues working together to perform a specific function Histology – the study of the microscopic anatomy of cells and tissues
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Epithelial tissue
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Cellularity – most of the tissue consists of cells packed together in an orderly fashion with little extracellular material (matrix) between the cell Avascular – receive nutrients from the vascular underlying connective tissue Basement membrane – separates epithelial and connective tissues
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Categories of epithelial tissues
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1. Covering and lining Cover the surface of the body and some organs, and line all hollow body structures Tight junctions enable it to form barriers that protect and control what substances can cross into adjacent tissues Apical surface – faces exterior or interior spaces Basal surface – adjacent to basal membrane
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2. Glandular Form glands that produce and secrete products needed by the body
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Epithelia cell shapes
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1. Squamous – thinnest cells; flattened nucleus
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This note was uploaded on 09/11/2011 for the course PSIO 201 taught by Professor Stanescu during the Summer '08 term at University of Arizona- Tucson.

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Unit 01 Flashcards - Primary Tissue Types 1. Epithelial...

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