Acinus
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| Acinus | |
|---|---|
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. Normal histology of the breast, including an acinus in lower image. The terminal duct connected to the magnified acinus is not within this microsection. | |
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. Centroacinar cells | |
| Anatomical terminology |
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An acinus (/ˈæsɪnəs/; Template:Plural form: acini; adjective, acinar /ˈæsɪnər/ or acinous) refers to any cluster of cells that resembles a many-lobed "berry", such as a raspberry (acinus is Latin for "berry"). The berry-shaped termination of an exocrine gland, where the secretion is produced, is acinar in form, as is the alveolar sac containing multiple alveoli in the lungs.
Exocrine glands
Acinar exocrine glands are found in many organs, including:
- the stomach[1]
- the sebaceous gland of the scalp
- the salivary glands of the tongue[2]
- the liver
- the lacrimal glands
- the mammary glands
- the pancreas[3]
- the bulbourethral (Cowper's) glands
The thyroid follicles can also be considered of acinar formation but in this case the follicles, being part of an endocrine gland, act as a hormonal deposit rather than to facilitate secretion.
Mucous acini usually stain pale, while serous acini usually stain dark.
Lungs
The end of the terminal bronchioles in the lungs mark the beginning of a pulmonary acinus that includes the respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli.[4]
See also
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References
- ^ Histology image: 51_07 at the University of Oklahoma Health Sciences Center - pyloric stomach
- ^ Histology image: 46_03 at the University of Oklahoma Health Sciences Center - sublingual gland
- ^ Histology image:10405loa from Page Module:Citation/CS1/styles.css has no content.Vaughan, Deborah (2002). A Learning System in Histology: CD-ROM and Guide. Oxford University Press. ISBN 978-0195151732.
- ^ Page Module:Citation/CS1/styles.css has no content.Weinberger S (2019). Principles of Pulmonary Medicine. Elsevier. p. 2. ISBN 978-0-323-52371-4.
External links
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