SLIME

From Big Medical Encyclopedia

SLIME (mucus) — the substances of a plant, animal and bacterial origin forming viscous aqueous solutions.

In an organism of an animal and the person S. is a product of secretion mucous glands (see), the mucous membranes of respiratory tracts moistening a surface also went. - kish. path, urinogenital system, middle ear. Page, cosecreted by mucous glands, call epithelial mucin (see). Physical. - chemical properties C. are defined by glycoproteins and glikozaminoglika-us who are a part of mucin and main substance of connecting fabric. In the embryonal period of S. it is found also in connecting fabric. By the time of the birth it remains in an umbilical cord in a look vartonovy studena (see). Sliming of connecting fabric in post-natal ontogenesis is observed only in the conditions of pathology (see. Mucous dystrophy ).

The page protects mucous membranes from mechanical, thermal, chemical damages, promotes advance of contents went. - kish. a path, has bactericidal properties. It plays an important role in maintenance of water and ionic balance of cells. Idea of protective properties C. extended thanks to opening secretory (linked to a secretory factor of an epithelial cell) immunoglobulins (see). Secretory immunoglobulins take the essential place in immunol. rezistenttsost of a mucous membrane. So, at decrease in their contents predisposition to chronic inflammatory respiratory diseases is noted. Insufficient secretion of S. results in dryness of mucous membranes, napr, at Shegren's syndrome (see. Shegrena syndrome ).

For identification of the mucin which is S.'s part, gistol. drug is painted mucicarmine (see. Karmin ). For gistokhy. identifications of various uglevodsoderzhashchy connections which are S.'s part apply the methods used for gistokhy. identifications mucopolysaccharides (see).


V. P. Bykova.

Яндекс.Метрика