Epithelial Cells/Tissue
- Created by: SimranS
- Created on: 22-10-15 19:11
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- Epithelial Cells
- How to classify them?
- 3 main criteria: 1) How many layers of cell? 2)What is the cell shape? 3) Any specializations on the free surface? (e.g. cilia)
- How many layers?
- One layer: simple epithelium
- Two or more layers: stratified epithelium
- Simple squamous epithelium
- Location: Air sacs and the lining of the heart, blood vessels and lymphatic vessels.
- Function: Allows materials to pass through by diffusion and filtration, and secretes lubricating substances.
- Simple columnar/ ciliated epitherlium
- Location: Ciliated tissues are in bronchi, uterine tubes and uterus; smooth (non-ciliated) are in the digestive tract, bladder.
- Function: Absorbs; goblet cells within secrete mucus and the cilia move it around.
- How to classify them?
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