T. Clark Brelje, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Robert L. Sorenson, Ph.D.
University of Minnesota
Department of Genetics, Cell Biology and Development
6-160 Jackson Hall
321 Church St SE
Minneapolis, MN 55455
Any view of a slide can be saved for later viewing in different ways.
Clipboard
The address of this view has been copied to your clipboard. This link can be pasted in any other program.
Bookmark
A bookmark link can be created using the bookmark function (Ctrl-D for Windows or Cmd-D for Mac) of your browser. Choose a name for the bookmark and select the folder in which you want it saved.
This semi-thin section (~1.0 µm thick) of skeletal muscle has excellent cellular definition compared to normal sections (4 to 6 µm thick). This longitudinal section allows the morphology of individual skeletal muscle cells (or fibers) to be examined.
The parallel arrangement of skeletal muscle cells is seen on the left of the specimen. Each cell is from 50 to 150 µm in diameter.
Some skeletal muscle cells can be followed for over 2.5 µm on the left side of the specimen.
Muscle Cell / Fibroblast Nuclei - muscle cell nuclei are mostly euchromatic and have a flattened, oval shape. Fibroblast nuclei are located between muscle cells and are more elongated and darker.
Sarcomere - cross-striations are evident in some areas.
A band - the main dark band
I band - the main light band
H band - thin light band in the middle of the A band
Z line - thin dark line in the middle of the I band