epithelium

Epithelium: Definition

The epithelium is a type of tissue composed of one or more layers of cells that cover the body’s surfaces, line internal cavities and organs, and form glands. This tissue serves several key functions including protection, absorption, filtration, excretion, secretion, and sensory reception. Epithelial cells are tightly packed, with minimal intercellular space, and are attached …
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Epithelial Cells: Definition

Epithelial cells are the cells that cover the surfaces of the body and line its hollow organs, ducts, and glands. They form the outer layer of the skin and the inner lining of the mouth, stomach, intestines, airways, bladder, and many other organs. Epithelial cells are tightly joined, forming a continuous sheet. That sheet of …
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