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Epithelium or epithelial tissue is a thin, continuous, protective layer of cells with little extracellular matrix. An example is the epidermis, the outermost layer of the skin. Epithelial (mesothelial) tissues line the outer surfaces of many internal organs, the corresponding inner surfaces of body cavities, and the inner surfaces of blood vessels.
Functions of epithelial tissue: The principle function of epithelial tissues are covering and lining of free surface; The cells of the body's surface form the outer layer of skin. Inside the body, epithelial cells form the lining of the mouth and alimentary canal and protect these organs. Epithelial tissues help in the elimination of waste.
A mucous membrane or mucosa is a membrane that lines various cavities in the body of an organism and covers the surface of internal organs. It consists of one or more layers of epithelial cells overlying a layer of loose connective tissue.
The body consists of many different types of tissue, defined as cells that act with a specialised function. [8] The study of tissues is called histology and is often done with a microscope. The body consists of four main types of tissues. These are lining cells , connective tissue, nerve tissue and muscle tissue. [9]
Cells within tissues and organs must be anchored to one another and attached to components of the extracellular matrix. Cells have developed several types of junctional complexes to serve these functions, and in each case, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in ...
Game 4: No. 8 Ohio State vs. No. 9 Tennessee, 8 p.m. (ABC/ESPN) CFP quarterfinals schedule. The four quarterfinal games will be played on New Year's weekend, with one game on Dec. 31 and three on ...
The basement membrane acts as a mechanical barrier, preventing malignant cells from invading the deeper tissues. [7] Early stages of malignancy that are thus limited to the epithelial layer by the basement membrane are called carcinoma in situ. The basement membrane is also essential for angiogenesis (development of new blood vessels).
Rioux, who started playing basketball at age 5, was 6 feet tall by the age of 8 and 7 feet tall before entering seventh grade. PHOTO: Olivier Rioux of the Florida Gators looks on before the start ...
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