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bronchiole

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.10 sec.
bron·chi·ole  (brngk-l)
n.
Any of the fine, thin-walled, tubular extensions of a bronchus.

[French, from New Latin bronchiola, diminutive of Latin bronchus; see bronchus.]

bronchi·olar (-lr) adj.

bronchiole
Noun
any of the smallest bronchial tubes

bronchiole  (brngk-l)
Any of the small, thin-walled tubes that branch from a bronchus and end in the alveolar sacs of the lung.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.bronchiole - any of the smallest bronchial ducts; ending in alveoli
duct, epithelial duct, canal, channel - a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs"
lower respiratory tract - the bronchi and lungs


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The terpenoids are responsible for the expectorant activity, while a variety of flavonoids are responsible for the spasmolytic effect of thyme on the bronchioles.
Recent studies have shown that whereas epithelial cells in the human respiratory tract express predominantly the [alpha]-2,6 sialic acid receptor, cells expressing the [alpha]-2,3 receptor were detected only occasionally in the upper respiratory tract; however, measurable expression of [alpha]-2,3-linked sialic acid receptors was found in some cells in the alveolar epithelium and at the junction of alveolus and terminal bronchiole (35).
This case illustrates the classic findings of carbon pigment deposition around terminal bronchioles, dust macules, and mixed dust fibrosis.
 
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