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Definition
| Groups of cells similar in structure and perform a common or related function |
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Definition
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Definition
| Lines inner and outer body |
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Definition
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Definition
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Definition
| Lines the open cavity of cardivascular, digestive, and respiratory systems covers organs of closed cavity |
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Term
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Definition
1. Protects
2. Absorption
3. Filtration
4. Excretion
5. Secretion
6. Sensory Reception |
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Term
| 6 Characteristics of epithelium |
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Definition
1. Polarity
2. Specialized contacts
3. Supported by connective tissue
4. Defines Boundary
5. Avascular but innervated
6. Regeneration |
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Term
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Definition
| Tiny hair like structures that increase surface area |
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Definition
| made up of Basal Lamina and Reticular Lamina |
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Term
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Definition
composed of a single cell layer (used in absorbtion and filtration areas)
All cells in the layer usually have same shape |
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Term
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Definition
has two or more cell layers (used in high abrasion area where protection is needed)
Named for the shape of the cells in the apical layer |
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Term
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Definition
Squamous - looks like flattened egg
Cuboidal - looks like a cube - nuclei
in the center
Columnar - Tall tightly packed nuclei
located at the bottom |
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Term
| Pseudostratified Columnar Epithelium |
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Definition
Vary in height
(false) - Pseudo
secretes or absorbs substances
ciliated
propels mucus away from lungs |
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Term
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Definition
| provides slick friction reducing lining |
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Term
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Definition
| Found in serous membranes lining ventral body cavity and covering organs |
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Term
| Transistional Stratified Epithelia |
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Definition
found in the bladder wall lining
become distended w/ urine
6 layers of cells go to 3 layers
cells flatten when stretched |
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Term
| Simple Squamous Epithelia |
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Definition
Scale like
Provides little protection
located where filtration occurs |
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Term
| Simple Cuboidal Epithelia |
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Definition
| located in areas where secretion and absorption occur |
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Term
| Simple Columnar Epithelia |
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Definition
Tall Tightly packed cells
Absorption and secretion
Lines from stomach to rectum
has dense microvilli |
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Term
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Definition
Protective
found in areas subject to wear and tear
several layers thick
Deeper cells are cuboidal or columnar |
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Term
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Definition
Lines some glandular ducts
Pharnyx , male urethra
found in transitional areas or junctions between other types of epithelia |
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