Introduction to aperio/epithelium lecture
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each of the black spaces below before clicking
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| Discuss the location, structure, and function of the basement membrane. | location - under epithelium. Structure - fusion of basal lamina with reticular lamina. Function - Anchor epithelium to loose CT underneath
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| Apical and basal surfaces | Apical = top, basal = bottom
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| simple squamous epithelium | rapid diffusion. Capillaries, alveoli, glomeruli
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| simple cuboidal epithelium | secretion and absorption. surface of ovaries, lining of nephrons, walls of renal tubules, parts of the eyes and thyroid
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| Simple columnar epithelium | move mucus and other substances. stomach, small intestine, uterus
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| microvilli | increase surface area for absorption, secretion
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| goblet cells | secrete mucin (mucus). Glandular simple columnar ET
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| Cilia | beat to move stuff. Found in trachea, fallopian tubes
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| stratified cuboidal ET | cuboidally shaped in multiple layers. Protect ducts of sweat glands, mammary glands, and salivary glands
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| stratified columnar ET | secretion and protection. ocular conjunctiva of the eye, parts of pharynx and anus, uterus, urethra and vas deferens
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| stratified squamous nonkeratinized ET | kept moist by body secretions. cornea, oral cavity, vagina, internal portion of lips, esophagus, anal canal
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| stratified squamous keratinized ET | protected from abrasion by keratin, and kept hydrated and protected from dehydration by glycolipids produced in stratum granulosum. Skin, tongue, external lips
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| pseudostratified columnar ciliated ET | secretion or absorption. trachea, upper respiratory tract
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| transitional epithelium | deal with changes in volume of fluid. Bladder, ureters, superior urethra, gland ducts of prostate.
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