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| sheet of cells that covers a body surface or lines a body cavity |
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| cells that are taller than they are wide, like columns |
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| squamous epithelia...provides slick, friction-reducing lining in the hollow organs of the circ system - blood vessels, the heart, and lymphatic vessels |
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| epithelium that lines the peritoneal, pleural, and pericardial cavities and covers the visceral organs in these cavities |
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| made of epithelial cells; they secrete a product |
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| scattered within epithelial sheets |
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| develop by invagination of an epithelial sheet into the underlying connective tissue |
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| scattered within the epithelial lining of the intestines and resp tubes, produce mucin. |
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| produced by goblet cells, a glycoprotein (sugar protein) that dissolves in water when secreted |
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resulting complex of mucin and water is vicous, slimy mucus;
covers, products, and lubricates many internal body surfaces |
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| secretory cells form tubes |
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| secretory cells frm spherical sacs. |
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| glands that contain both tubular and aveolar units |
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| type of cell junction that closes off the intercellular space |
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| type of anchoring junction...reinforces tight junctions, particular when tissues are stretched |
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| desmosomes/anchoring junction |
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| main junctions for binding cells together...adhesive spots scattered like ribets along the abutting sides of adjacent cells. |
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| tunnel-like juntion that can occur anywhere along lateral membranes of adjacent cells. |
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| thin sheet of protein that underlies an epithelium |
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| retiular fibers plus basal lamina |
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| fingerlike extensions of the plasma membrane of apical epithelial cells |
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| whiplike, highly motile extensions of the apical surface membranes of certain epithelial cells |
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| centriole at the base of each cilium |
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