Structure_And_Function_Of_Actin_And_Myosin_In_Skeletal_Muscl

Structure And Function Of Actin And Myosin In Skeletal Muscle Structure and Function of Actin and Myosin In Skeletal Muscle Tissue Skeletal muscle comprises the largest single organ of the body. It is highly compartmentalized, and we often think of each compartment as a separate entity (such as the bicep muscle). Each of our individual muscles is composed of single cells or fibers embedded in a matrix of collagen. At either end of the muscle belly, this matrix becomes a tendon that attaches the muscle to the appropriate bone. “Skeletal muscle is the most abundant tissue in the human body and also on of the most adaptable. Vigorous training with weights can double or triple a muscles size, whereas disuse, as in space travel, can shrink it by twenty percent in two weeks” (1). Muscle cells contain most of the structures common to all cells. Each cell is enclosed by a cell membrane or plasmalemma; they contain mitochondria for the oxidative metabolism of nutrients; and all the machinery necessary for protein synthesis. Skeletal muscle fibers are multinucleated and can be as much as two centimeters long. The principal force generating components are actin and myosin molecules. These myofilaments are arranged in interdigitating matrices capable of sliding across each muscle, filaments, myosin, actin, protein, each, cells, thick, two, skeletal, percent, fibers, muscles, cell, thin, nucleus, mass, made, structure, sarcomere, pg, new, myofibrils, loss, f-actin, dna, dark, cytoplasm, contraction, age, about, z-discs, york, single