MUSCLE PHYSIOLOGY

Detailed explanation-1: -The sarcolemma (sarco (from sarx) from Greek; flesh, and lemma from Greek; sheath) also called the myolemma, is the cell membrane surrounding a skeletal muscle fiber or a cardiomyocyte. It consists of a lipid bilayer and a thin outer coat of polysaccharide material (glycocalyx) that contacts the basement membrane.

Detailed explanation-2: -What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell. It consists of a cell membrane (plasma membrane) and an outer coat made up of a thin layer of polysaccharide (glycocalyx) material with numerous thin collagen fibrils.

Detailed explanation-3: -The muscle cell membrane is called the sarcolemma and the cytoplasm, the sarcoplasm. The sarcolemma has the property of excitability and can conduct the electrical impulses that occur during depolarization.

Detailed explanation-4: -The sarcolemma (muscle plasma membrane) plays a central role in skeletal muscle structure and function (1). In addition to the housekeeping functions of a cell plasma membrane, the sarcolemma is directly involved in synaptic transmission, ac-tion potential propagation, and excitation-contraction coupling (1).