Lecture06_bio201_f07_A[1]

Lecture06_bio201_f07_A[1] - Human Anatomy & Physiology...

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Human Human Anatomy Anatomy SEVENTH EDITION SEVENTH EDITION Elaine N. Marieb Elaine N. Marieb Katja Hoehn Katja Hoehn ARIZONA STATE UNIVERSITY Lecture Series 7 Lecture Series 7
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Bio 201 ASU DPC Tissues Groups of cells similar in structure and function The four types of tissues Epithelial Connective Muscle Nerve
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Bio 201 ASU DPC Epithelial Tissue Cellularity – composed almost entirely of cells Special contacts – form continuous sheets held together by tight junctions and desmosomes Polarity – apical and basal surfaces
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Bio 201 ASU DPC Epithelial Tissue Supported by connective tissue – reticular and basal laminae Avascular but innervated – contains no blood vessels but supplied by nerve fibers Regenerative – rapidly replaces lost cells by cell division
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Bio 201 ASU DPC Classification of Epithelia Simple or stratified
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Bio 201 ASU DPC Classification of Epithelia Squamous, cuboidal, or columnar
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Bio 201 ASU DPC Epithelia: Simple Squamous Single layer of flattened cells with disc-shaped nuclei and sparse cytoplasm Functions Diffusion and filtration Provide a slick, friction-reducing lining in lymphatic and cardiovascular systems Present in the kidney glomeruli, lining of heart, blood vessels, lymphatic vessels, and serosae
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Bio 201 ASU DPC Epithelia: Simple Squamous
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Bio 201 ASU DPC Epithelia: Simple Cuboidal Single layer of cube-like cells with large, spherical central nuclei Function in secretion and absorption Present in kidney tubules, ducts and secretory portions of small glands, and ovary surface
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Bio 201 ASU DPC Epithelia: Simple Cuboidal
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This note was uploaded on 04/29/2008 for the course BIO 201 taught by Professor Oberstein during the Fall '08 term at ASU.

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Lecture06_bio201_f07_A[1] - Human Anatomy & Physiology...

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