Biology
Give the structure and function of different types of epithelial tissues.
Tissues
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Answer
There are four types of epithelial tissues:
- Squamous epithelium — They are composed of thin, flattened and polygonal cells. For example: Cells of the outer layer of skin. These cells are usually protective.
- Cuboidal epithelium — They are composed of cube-like cells. For example: Inner wall lining of kidneys tubules are concerned with absorption.
- Columnar epithelium — They are composed of vertically arranged, tall, cylindrical or column-like cells. For example: Inner lining of stomach and intestine. These cells are usually secretory.
- Ciliated epithelium — The columnar epithelium developes cilia at some places like lining of wind pipe and oviduct. The cilia keeps lashing and move the substances in its contact.
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