This plastic section of skeletal muscle cut in longitudinal section shows the longitudinal and cross striations that give this type of muscle the name of striated muscle. The longitudinal striations are formed by the eosinophilic myofibrils, which can be resolved at this magniication. The cross striations are formed by the alignment of the sarcomers in adjacent myofibrils. Elongated, pale staining muscle cell nuclei lie just beneath the plasma membrane of these multinucleated cells. Other nuclei, usually flatter and more darkly stained belong either to fibroblasts or endothelial cells. The unstained extracellular spaces are filled with extracellular matrial.
Stain = H&E
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| Copyright by: Paul B. Bell, Jr. & Barbara Safiejko-Mroczka |
The University of Oklahoma