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Cards In This Set
| Front | Back |
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Simple squamous
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-Single layer of flat cells
Functions: diffusion, filtration, or secretion in membranes |
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Simple cuboidal epithelium
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- Functions to move sex cells/has centrally located spherical nuclei
- forms lining of ducts in glands |
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Simple columnar epithelium
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- Forms lining of digestive tract
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Pseudostratified columnar epithelium
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- Functions to move sex cells
- nuclei located at different levels within cells - forms lining of respiratory passages/forms lining of ducts in glands |
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Stratified squamous epithelium
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- younger cells cuboidal, older cells flattened
- forms lining of mouth |
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Transitional epithelium
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- forms inner lining of urinary bladder
- ability to stretch |
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Tissues
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-Group of cells w/ similar structure & function
- 4 primary types: (Epithelial, connective, muscle, and nervous |
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Epithelial tissue
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- located: body coverings (skin), body linings (membranes), & secretions
-functions: protection, absorption, filtration, secretion |
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Epithelium characteristics
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-cells fit closely together & often form sheets
-the apical surface is the free surface of the tissue -the lower surface of the epithelium rests on a basement membrane -Avascular (NO BLOOD SUPPLY) -Regenerate easily if well nourished -Connective tissue is always under epithelium |
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Classification of epithelia
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-Number of cell layers
-simple: one layer -stratified: more than one layer |
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Shapes of cells:
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Squamous, flattened, cuboidal (sphere), cube shaped, columnar (column-like)
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