histological sample striated skeletal muscle of mammal tissue under the microscope.

anatomy arch background biology body cardiac cell column contraction cross disks education fiber fibers fibre heart hematoxylin histological histology human intercalated line mammal medicine micro micrograph microscope microscopy muscle muscles muscular myocardiocyte myocardium myocyte myocytes myofibril nucleus pattern sample science section showing skeletal smooth stained striated structure system texture tissue types under