Alveolar gland

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List of terms related to Alveolar gland

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-632-7753

In contrast to tubular glands, in the second main variety of gland, the secretory portion is enlarged and the lumen variously increased in size. These are termed alveolar glands (or saccular glands, or acinar glands, or acinous glands).

Some sources draw a clear distinction between acinar and alveolar glands, based upon the shape of the lumen.

A further complication in the case of the alveolar glands may occur in the form of still smaller saccular diverticuli growing out from the main sacculi. These are termed alveoli.

The term "tubulo-alveolar" (or "tubulo-acinar", or "compound tubulo-acinar", or "compound tubulo-alveolar") is used to describe that start out as branched tubular, and branch further to terminate in alveoli. This type of gland is found in the salivary glands and esophagus.

The term "racemose gland" is used to describe a "compound alveolar gland" or "compound acinar gland".

Additional images

• 

  Alveoli of lacrimal gland.

• 

  Human submaxillary gland. At the right is a group of mucous alveoli, at the left a group of serous alveoli.

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  Section of portion of mamma.

See also

• Acinus
• Duct (anatomy)