sarcolemma definition
Sarcolemma. Definition. noun. The thin, transparent, extensible membrane covering every striated muscle fiber. It consists of a cell membrane (plasma membrane) and an outer coat made up of a thin layer of polysaccharide material with numerous thin collagen fibrils.Supplement.arcolemma. Definition. noun. The thin, transparent, extensible membrane covering every striated muscle fiber. It consists of a cell membrane (plasma membrane) and an outer coat made up of a thin layer of polysaccharide material with numerous thin collagen fibrils. Supplement.