Brush Border

brush border

[′brəsh ‚bȯr·dər] (cell and molecular biology) A superficial protoplasic modification in the form of filiform processes or microvilli; present on certain absorptive cells in the intestinal epithelium and the proximal convolutions of nephrons.

Brush Border

the aggregate of rod-shaped structures on the surface of certain cells in animals and humans. The brush border consists of separate cytoplasmic processes arranged like a brush along the free margin of the cells of the excretory ducts of the salivary glands, the convoluted uriniferous tubules of the kidney, and certain other epithelial cells. By substantially increasing the cell surface, the brush border promotes more intensive absorption and excretion of matter.

brush border

border

[bor´der] a bounding line, edge, or surface.brush border a specialization of the free surface of a cell, consisting of minute cylindrical processes (microvilli) that greatly increase the surface area.

Brush border, characterized by closely packed microvilli. From Dorland's, 2000.vermilion border the exposed red portion of the upper and lower lips.

brush bor·der

the apical epithelial surface bearing closely packed microvilli about 2 mcm long, such as occur on the cells of the proximal tubule of the nephron. Synonym(s): limbus penicillatus

A specialized portion of the free or apical aspect of certain epithelial cells—e.g., of the GI tract—consisting of closely packed microvilli that facilitate absorption; brush border cells line the luminal surface of the intestine and proximal convoluted tubules of the kidneys; the BB contains absorptive microvilli and glycocalyx—which is rich in hydrolytic enzymes

brush border

Physiology A specialized portion of the free or apical aspect of certain epithelial cells–eg, of the GI tract, consisting of closely packed microvilli that facilitate absorption; brush border cells line the luminal surface of the intestine and proximal convoluted tubules of the kidneys; the BB contains absorptive microvilli and glycocalyx–which is rich in hydrolytic enzymes

brush bor·der

(brŭsh bōr'dĕr) An epithelial surface bearing closely packed microvilli about 2 mcm long, such as occurs in the proximal tubule of the nephron.

brush border

see MICROVILLUS.

单词	brush border
释义	brush border brush border n (Physiology) physiol a layer of tightly packed minute finger-like protuberances on cells that line absorptive surfaces, such as those of the intestine and kidney. See also microvillus Brush Border brush border [′brəsh ‚bȯr·dər] (cell and molecular biology) A superficial protoplasic modification in the form of filiform processes or microvilli; present on certain absorptive cells in the intestinal epithelium and the proximal convolutions of nephrons. Brush Border the aggregate of rod-shaped structures on the surface of certain cells in animals and humans. The brush border consists of separate cytoplasmic processes arranged like a brush along the free margin of the cells of the excretory ducts of the salivary glands, the convoluted uriniferous tubules of the kidney, and certain other epithelial cells. By substantially increasing the cell surface, the brush border promotes more intensive absorption and excretion of matter. brush border border [bor´der] a bounding line, edge, or surface.brush border a specialization of the free surface of a cell, consisting of minute cylindrical processes (microvilli) that greatly increase the surface area.Brush border, characterized by closely packed microvilli. From Dorland's, 2000.vermilion border the exposed red portion of the upper and lower lips. brush bor·der the apical epithelial surface bearing closely packed microvilli about 2 mcm long, such as occur on the cells of the proximal tubule of the nephron. Synonym(s): limbus penicillatus A specialized portion of the free or apical aspect of certain epithelial cells—e.g., of the GI tract—consisting of closely packed microvilli that facilitate absorption; brush border cells line the luminal surface of the intestine and proximal convoluted tubules of the kidneys; the BB contains absorptive microvilli and glycocalyx—which is rich in hydrolytic enzymes brush border Physiology A specialized portion of the free or apical aspect of certain epithelial cells–eg, of the GI tract, consisting of closely packed microvilli that facilitate absorption; brush border cells line the luminal surface of the intestine and proximal convoluted tubules of the kidneys; the BB contains absorptive microvilli and glycocalyx–which is rich in hydrolytic enzymes brush bor·der (brŭsh bōr'dĕr) An epithelial surface bearing closely packed microvilli about 2 mcm long, such as occurs in the proximal tubule of the nephron. brush border see MICROVILLUS. FinancialSeeBorderThesaurusSeeborder
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