Digital Histology
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Smooth muscle

A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x

Muscle fibers <p>A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x</p>

Muscle fibers

A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x
Sarcolemma <p>A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x</p>

Sarcolemma

A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x
Nuclei <p>A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x</p>

Nuclei

A unique feature of smooth muscle fibers is the presence of “inch-worm” nuclei. This appearance is caused by the criss-crossing of myofilaments in the cytoplasm deforming the nucleus during contraction.  The central, “inch-worm” nuclei, when present, and the absence of striations are good identifiers for smooth muscle in longitudinal section.  1000x
Main SlideMuscle fibersSarcolemmaNuclei