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Functions of epithelial tissues
- 1. Covers organs, lines cavities to form barriers. The tissue absorbs, secretes & excretes.
- 2. Glandular tissue: secretes substances from the body
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Characteristics of epithelial tissues
- 1. Avascular
- 2. High mitotic rate
- 3. Tightly packed
- 4. Basement membrane and 1 free surface
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Classification by shapes of cells, of epithelial tissues
- 1. Squamous - Thin, flattened
- 2. Cuboidal - Cube-shaped
- 3. Columnar - Tall, elongated
- 4. Transitional - Change shape when stretched
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