Atlas of plant and animal histology

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Animal tissues. Muscle.

SMOOTH MUSCLE

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Smooth muscle
Smooth muscle: muscle layer of the small intestine.
Species: mouse (Mus musculus; mammal).
Technique: haematoxylin and eosin, 8 μm thick section, paraffin embedding.
The image is from small intestine.
Put the cursor over the mouse to see where the image came from.

The smooth muscle of the small intestine is shown in this figure. In the upper part, the smooth muscle are observed in a transverse view, whereas in the lower part smooth muscle cells are oriented parallel to the cutting plane. Smooth muscle cells are fusiform, small in diameter, and with a nucleus adapted to the morphology of the cell. They are non branched cells. Unlike the skeletal and cardiac muscles, striations are not observed in the cytoplasm, . This is because the cytoskeletal filaments, actin and myosin, are not arranged so regularly, but more scattered. That is why the cytoplasm shows a homogeneous pink stainning.

Home / Animal tissues / Muscle / Smooth muscle
Actualizado: 08-07-2019. 16:51
Atlas of Plant and Animal Histology
Dep. of Functional Biology and Health Sciences.
Faculty of Biology.
University of Vigo
Spain

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