what is epithelial tissue?
Answers
Answer:
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Explanation
Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
The cells in epithelial tissue are tightly packed together with very little intercellular matrix. Because the tissues form coverings and linings, the cells have one free surface that is not in contact with other cells. Opposite the free surface, the cells are attached to underlying connective tissue by a non-cellular basement membrane. This membrane is a mixture of carbohydrates and proteins secreted by the epithelial and connective tissue cells.
Epithelial cells may be squamous, cuboidal, or columnar in shape and may be arranged in single or multiple layers.
Answer:
Epithelial tissue provides a covering or lining for various internal and external body parts. The cells are compactly arranged with little intercellular spaces.According to the number of cell layers, epithelial tissue is divided into two types:
*Simple epithilium.
*Compound Epithilium or stratified epithelium.
Explanation:
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