This plastic section of skeletal muscle cut in longitudinal section shows both longitudinal and cross striations. The longitudinal striations are formed by the eosinophilic myofibrils, whereas 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, located between the muscle cells and usually flatter and more darkly stained, belong either to fibroblasts or endothelial cells. The unstained extracellular spaces are filled with extracellular matrial.
Stain = Iron Hematoxylin
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| Copyright by: Paul B. Bell, Jr. & Barbara Safiejko-Mroczka |
The University of Oklahoma