histological sample striated muscle tissue under the microscope.

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