Epithelium Types (Chart)
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| Squamous - where found | lining of body cavities (pleural, pericardial & peritoneal) called mesothelium; lining of blood vessels called endothelium; alveoli of the lungs | outer layer of the skin (keratinized) and the lining of the esophagus (non-keratinized); primary function is protection | N/A
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| Squamous - how identified | one layer; cells are flat; nucleus is disc-shaped | multiple layers; cells are flat; nucleus is disc-shaped | N/A
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| Cuboidal - where found | ducts of the kidney; gland tissues (thyroid - endocrine; pancreas - endocrine; salivary - exocrine) | found in few places; ducts of exocrine glands-salivary & sweat; ducts of endocrine glands - pancreas | N/A
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| Cuboidal - how identified | Single layer of cube-shaped cells with spherical (round) central nuclei | Two or more layers of cube-like cells | N/A
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| Columnar - where found | linings of the small intestine, gall bladder, and stomach | found in the ducts of glands, much like stratified cuboidal; has limited distribution in the body | pseudo-stratified
ciliated - upper respiratory passages (trachea, bronchi); non-ciliated in the large ducts of glands (pancreas, salivary)
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| Columnar - how identified | cells are taller than they are wide; cells are closely packed; nuclei are oval or elliptical | more than one layer of cells taller than wider | pseudo-stratified
tall and tapered, closely packed cells; contains goblet cells;
ciliated is the usual type, but can be non-ciliated
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| Transitional | N/A | Rounded cuboidal type cells; Found in the urinary organs(urinary bladder, urethra) and changes its shape in response to contractiion & relaxation of the organs; Gives surface a scalloped outline | contains cells that are flat and cuboidal (or rounded cuboidal type cells);
Found in the urinary bladder and urethra; cells change shape in response to contractiion & relaxation of the organs;
gives surface a scalloped outline
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Created by:
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