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acinus

   Also found in: Medical, Encyclopedia, Wikipedia 0.04 sec.
ac·i·nus  (s-ns)
n. pl. ac·i·ni (-n)
One of the small saclike dilations composing a compound gland.

[Latin, berry.]

a·cinic (-snk), aci·nous adj.

acinus [ˈæsɪnəs]
n pl -ni [-ˌnaɪ]
1. (Life Sciences & Allied Applications / Anatomy) Anatomy any of the terminal saclike portions of a compound gland
2. (Life Sciences & Allied Applications / Botany) Botany any of the small drupes that make up the fruit of the blackberry, raspberry, etc.
3. Botany obsolete a collection of berries, such as a bunch of grapes
[New Latin, from Latin: grape, berry]
acinic  [əˈsɪnɪk], acinous, acinose adj
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.acinusacinus - one of the small drupes making up an aggregate or multiple fruit like a blackberry
drupelet - a small part of an aggregate fruit that resembles a drupe
2.acinusacinus - one of the small sacs or saclike dilations in a compound gland
gland, secreter, secretor, secretory organ - any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream
sac - a structure resembling a bag in an animal


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The etiology of these alterations is uncertain and could be secondary to the inflammatory injury or perhaps related to direct and/or indirect (via the degree of lung injury) stimulation of irritant C-fibers in the tracheobronchial tree and/or vagal non-myelinated fibers in the pulmonary acinus (Costa and Schelegle 1999).
The terminal respiratory unit of the lung from the respiratory bronchiole to the alveolus is called the acinus.
Mercer has used serial section reconstruction to make the first precise measurements of some of the lung's tiniest structures, such as an acinus - a cluster of alveoli vented by a single airway.
 
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