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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The sublingual gland is a major salivary gland. It secretes more mucous (carbohydrate) than serous (protein) fluid.
Stroma - the connective tissue component of the gland.
Capsule - connective tissue that encapsulates the gland.
Lobule - connective tissue divides the gland into lobules.
Parenchyma - the functional component of the gland that consists of secretory cells and ducts
Mucous Cells (rich in carbohydrates) - are lightly stained with a "foamy" appearance (the mucous has been extracted) and are the major portion of the gland.
Serous Cells (rich in proteins) - are darkly stained and are a minor portion of the gland.
Serous and Mucous Cells - acini of light stained mucous cells are surrounded by the darkly stained mucous cells.
Intralobular Ducts - two types are found within lobules:
Intercalated Ducts - the smallest ducts (low cuboidal) that insert into and drain individual acini.
Main Excretory Duct - maybe simple columnar, pseudostratified columnar or stratified cuboidal epithelium. Goblet cells are a common feature of sublingual ducts.
A section of the overlying oral epithelium is also seen in this specimen.