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单词 Brush border
释义

Brush border

原声例句
Osmosis-解剖与生理

But to help absorb sugars, there are special enzymes, on the top surface or brush border of the intestinal cells, called brush border enzymes.

但糖类的吸收需要一类特殊的酶来协助;这类酶分布于小肠细胞的顶端,即小肠粘膜刷状缘;这类酶也因此称为刷状缘酶。

Crash Course 解剖生理学篇

Enzymes are proteins, and proteins are expensive. So these compounds — known as brush border enzymes — can just sit around and process food as it passes by, without your body having to make new ones.

酶是蛋白质,蛋白质很昂贵。所以这些化合物——被称为刷状边界酶——可以在食物经过时无所事事地处理食物,而你的身体不必制造新的。

英语百科

Brush border

Duodenum with brush border (microvillus)
Illustration of the brush border membrane of small intestinal villi

A brush border (striated border or brush border membrane) is the microvilli-covered surface of simple cuboidal epithelium and simple columnar epithelium cells found in certain locations of the body. Microvilli are approximately 100 nanometers in diameter and their length varies from approximately 100 to 2,000 nanometers in length. Because individual microvilli are so small and are tightly packed in the brush border, individual microvilli can only be resolved using electron microscopes; with a light microscope they can usually only be seen collectively as a fuzzy fringe at the surface of the epithelium. This fuzzy appearance gave rise to the term brush border, as early anatomists noted that this structure appeared very much like the bristles of a paintbrush.

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更新时间:2025/6/18 13:24:57