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.
(May 2013). The sarcolemma (sarco (from sarx) from Greek; flesh, and lemma from Greek; sheath.) also called the myolemma, is the cell membrane of a striated muscle fiber cell. At each end of the muscle fiber, the surface layer of the sarcolemma fuses with a tendon fiber, and the tendon fibers in turn collect into bundles to form the muscle tendons that then adhere onto bones. Noun. 1. sarcolemma-an extensible membrane enclosing the contractile substance of a muscle fiber. tissue layer, membrane-a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants. 1  Facebook. 2  Twitter. Medical Definition of SARCOLEMMA. : the thin transparent homogeneous sheath enclosing a striated muscle fiber. : the membrane A special feature of the sarcolemma is that it invaginates into the cytoplasm of the muscle cell, forming membranous tubules radially and longitudinally within the fiber called transverse tubules (T-tubules). At each end of the muscle fiber, the surface layer of the sarcolemma fuses with a tendon fiber, and the tendon fibers in turn collect into bundles to form the muscle tendons that then adhere onto bones. Definition of SARCOLEMMA. : the membrane enclosing a striated muscle fiber. — sar·co·lem·mal \-məl\ adjective Noun. 1. sarcolemma-an extensible membrane enclosing the contractile substance of a muscle fiber. tissue layer, membrane-a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants. 1  Facebook. 2  Twitter. The sarcolemma generally maintains the same function in muscle cells as the plasma membrane does in other eukaryote cells. It acts as a barrier between the extracellular and intracellular compartments, defining the individual muscle fiber from its surroundings. At each end of the muscle fiber, the surface layer of the sarcolemma fuses with a tendon fiber, and the tendon fibers in turn collect into bundles to form the muscle tendons that then adhere onto bones. Click here for more textbooks. Sarcolemma is the name of the cell membrane that encloses each muscle cell, specifically. cells (muscle cell = muscle fibre = muscle fiber). Each sarcolemma has a similar biochemical composition to that of a plasmalemma, which is another word for a (general) cell membrane.  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. 
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sarcolemma definition