News tagged with epithelium

How the gut gets its villi

Villi are small epithelial protrusions that serve to increase the surface area of the gut for efficient nutrient absorption. The mechanism of their formation during development was recently revealed by a study published in ...

Oct 14, 2013
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Beating blindness with vegetable oil

Scientists working at the Research Center on Aging at the Health and Social Services Centre—University Institute of Geriatrics of Sherbrooke (CSSS-IUGS) have been studying strategies for protecting retinal ...

Aug 15, 2013
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Origin of aggressive ovarian cancer discovered

Cornell University researchers have discovered a likely origin of epithelial ovarian cancer (ovarian carcinoma), the fifth leading cause of cancer death among women in the United States.

Mar 06, 2013
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Epithelium

Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of structures throughout the body, and also form many glands. Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport and detection of sensation. In Greek "Epi" means, "on, upon," and "Theli" meaning "tissue." Epithelial layers are avascular, so they must receive nourishment via diffusion of substances from the underlying connective tissue, through the basement membrane.[unreliable source?] Epithelia can also be organized into clusters of cells that function as exocrine and endocrine glands. Exocrine and endocrine epithelial cells are highly vascular.

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