sarcolemma
sar·co·lem·ma
S0089200 (sär′kə-lĕm′ə)sarcolemma
(ˌsɑːkəʊˈlɛmə)sar•co•lem•ma
(ˌsɑr kəˈlɛm ə)n., pl. -mas.
Noun | 1. | sarcolemma - an extensible membrane enclosing the contractile substance of a muscle fiber |
单词 | sarcolemma | |||
释义 | sarcolemmasar·co·lem·maS0089200 (sär′kə-lĕm′ə)sarcolemma(ˌsɑːkəʊˈlɛmə)sar•co•lem•ma(ˌsɑr kəˈlɛm ə)n., pl. -mas.
Sarcolemmasarcolemma[‚sär·kə′lem·ə]Sarcolemmathe delicate membrane that invests smooth-muscle cells and striated and myocardial fibers. The term “sar-colemma” was introduced by the British physician W. Bowman in 1840. A sarcolemma consists of a three-layer cell membrane, which is approximately 75 angstroms thick and similar to the cell membrane in other animal cells, and a basilar membrane, which is a layer of amorphous matter containing polysaccharides. In vertebrates the basilar membrane of muscle cells and muscle fibers usually contains collagen fibrils. REFERENCESDe Robertis, E., W. Nowinski, and F. Saez. Biologiia kletki. Moscow, 1967. (Translated from English.)Elektronno-mikroskopicheskaia anatomiia. Moscow, 1967. (Translated from English.) sarcolemmasarcolemma[sahr″ko-lem´ah]sar·co·lem·ma(sar'kō-lem'ă),sarcolemma(sär′kə-lĕm′ə)sar·co·lem·ma(sahr'kō-lem'ă)sarcolemmaA delicate membrane surrounding a striped muscle fibre.sarcolemmathe outer membrane surrounding the muscle fibre (see MYOFIBRIL). It is similar in biochemical composition to the plasmalemma.sarcolemma
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