What Does the Sarcolemma
The Sarcolemma (Sarco (From Sarx) from Greek; Flesh, and Lemma from Greek; Sheath) Also Called the Myolemma, Is the Cell Membrane of a Muscle Cell. It Consists...
The sarcolemma (sarco (from sarx) from Greek; flesh, and lemma from Greek; sheath) also called the myolemma, is the cell membrane of a muscle cell. It consists of a lipid bilayer and a thin outer coat of polysaccharide material (glycocalyx) that contacts the basement membrane.
What are the two functions of the sarcolemma?
As well as allowing endo- and exocytosis, the sarcolemma acts as a barrier and a link to the cytoskeleton of the extracellular matrix. It is also an electrical insulator. As a neuromuscular junction, it functions to propagate action potentials and is involved in excitation-contraction coupling.
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What is the sarcolemma of muscle cells?
The sarcolemma is the plasma membrane of the muscle cell and is surrounded by basement membrane and endomysial connective tissue. The sarcolemma is an excitable membrane and shares many properties with the neuronal cell membrane.
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