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
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MH 094hr Parotid
Parotid
This image was obtained with a 60x oil immersion objective from MH 094. The increased resolution is helpful in viewing secretory cells and ducts of the parotid.
The minimal functional unit of the parotid is a lobule defined by a thin layer of connective tissue.
Serous Cells (#1 and #2) - arranged as acini of pyramidal serous cells. These polarized cells have RER at their base (basophilic) and secretion granules (eosinophilic) at their apex
Mucous Cells - polarized cells with flattened nuclei at the bottom of the cells. These are very lightly stained with a "foamy" appearance (mucous has been extracted).
Intralobular Ducts - two types are found within lobules:
Intercalated Ducts (#1, #2 and #3) - the smallest ducts that insert into and drain individual acini. They are more lightly stained than acini cells and are low cuboidal.
Striate Ducts - arise from intercalated ducts. They are columnar with basal striations and are surrounded by capillaries.