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Home / Animal tissues / Connective / Proper / Loose

Animal tissues
Connective proper


LOOSE

Elastic fibers
Collagen fibers
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Smooth connective tissue
Tissue: loose connective proper tissue.
Species: Mouse (Mus musculus; mammals).
Technique: 8 µm thick paraffin sections stained with haematoxylin and eosin.

The loose connective tissue shows a highly developed and extracellular matrix. The ground substance is prominent in the extracellular matrix, that is why the clear appearance. There are also collagen fibers and elastic fibers, as well as reticular fibers in some tissues. In the image above, elastic fibers can be readily observed, which are long and thin, whereas collagen fibers are shorter and thicker. Collagen fibers are much less abundant than in other connective proper tissues (for instance irregular dense connective tissue).

Images

Loose connective tissue in the kidney
Loose connective tissue (green-bluish color) surrounding blood vessels in the kidney.
Loose connective tissue in the liver
Loose connective tissue (green-bluish color) wrapping the hepatic lobules.
Loose connective tissue in the esophagus
Loose connective tissue in the esophagus mucosa.
Loose connective in the small intestine
Loose connective tissue in the thin intestine mucosa and submucosa.
Loose connective tissue in a muscle
Loose connective tissue (green-bluish color) surrounding the muscle cells and forming the endomysium.
Loose connective tissue in testis
Loose connective tissue (green-bluish color) among the efferent ducts of testis.
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