write characteristic of epithelial tissue with functions? give me a answer fast
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Answer:
Explanation:
Functions of the Epithelium
Epithelia tissue forms boundaries between different environments, and nearly all substances must pass through the epithelium. In its role as an interface tissue, epithelium accomplishes many functions, including:
Protection for the underlying tissues from radiation, desiccation, toxins, and physical trauma.
Absorption of substances in the digestive tract lining with distinct modifications.
Regulation and excretion of chemicals between the underlying tissues and the body cavity.
The secretion of hormones into the blood vascular system. The secretion of sweat, mucus, enzymes, and other products that are delivered by ducts come from the glandular epithelium.
The detection of sensation.
Characteristics of Epithelial Layers
Epithelial tissue is composed of cells laid out in sheets with strong cell-to-cell attachments. These protein connections hold the cells together to form a tightly connected layer that is avascular but innervated in nature.
The epithelial cells are nourished by substances diffusing from blood vessels in the underlying connective tissue. One side of the epithelial cell is oriented towards the surface of the tissue, body cavity, or external environment and the other surface is joined to a basement membrane. The basement layer is non-cellular in nature and helps to cement the epithelial tissue to the underlying structures.
Epithelial tissue
1 these tissues are covering or protecting tissue in animal body
2 cells are tightly packed with no intracellular spaces forming thin sheets
3 found in inner lining of oesophagus, kidneys
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