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Simple Squamous Epithelium:
Description: A single layer of flat cells. Looks like a platter of fried eggs "sunny-side up".
Location: Air sacs (alveoli) of lungs, lines the inside of heart and blood vessels
Function: Filtration, diffusion, osmosis |
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Simple Cuboidal Epithelium:
Description: A single layer of roughly cube-shaped cells
Location: Lines kidney tubules and the small ducts of many glands
Function: Secretion and absorption |
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Simple Columnar Epithelium:
Description: A single layer of tall rectangular cells
Location: Lines the gall-bladder and most of the G.I. tract
Function: Absorption and secretion |
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Pseudostratified Ciliated Columnar Epithelium:
Description: Looks like a stratified tissue, but its not. Each cell extends from the basement membrane to the lumen
Location: Lines the upper respiratory tract, the epididymis, and part of the male ureth |
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Stratified Squamous Epithelium:
Description: Many layers of cells with squamous cells located next to the lumen
Location: Keratiniazed variety located on the outer surface of the epidermis of the skin. The non-keratinized variety lines the mouth, eso |
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Transitional Epithelium:
Description: The appearance of this tissue can vary greatly, that is why it is called transitional epithelium.
Location: Lines the urinary bladder and ureter
Function: Permits distention |
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