terminal bronchiole

(redirected from Terminal bronchioles)

bronchiole

 [brong´ke-ōl]
one of the successively smaller channels into which the segmental bronchi divide within the bronchopulmonary segments. adj., adj bronchi´olar.
respiratory b's the final branches of the bronchioles, communicating directly with the alveolar ducts; they are subdivisions of terminal bronchioles, have alveolar outcroppings, and themselves divide into several alveolar ducts.
Respiratory bronchiole. From Dorland's 2000.
( and see color plates.)
terminal bronchiole the last portion of a bronchiole that does not contain alveoli, i.e., one whose sole function is gas conduction; it subdivides into respiratory bronchioles.

ter·mi·nal bron·chi·ole

the end of the nonrespiratory conducting airway; the lining consists of simple columnar or cuboidal epithelium without mucous goblet cells; some of the cells are ciliated; numerous Clara cells also occur.

terminal bronchiole

ter·mi·nal bron·chi·ole

(tĕr'mi-năl brong'kē-ōl)
The end of the nonrespiratory conducting airway; the lining is simple columnar or cuboidal epithelium without mucous goblet cells; most of the cells are ciliated, but a few nonciliated serous secreting cells occur.
References in periodicals archive ?
The adenomatous overgrowth of terminal bronchioles and reduced number of normal alveoli may cause significant pulmonary effects.
The inflammatory response associated with MWCNT exposure was characterized by neutrophilia as determined by BALF cell differentials (Figure 4B) and by using immunohistochemical staining with an anti-neutrophil antibody, which revealed neutrophils near terminal bronchioles and in proximity to macrophages containing O-MWCNTs (Figure 4C).
Congenital cystic adenomatoid malformation is an embrionic developmental disorder characterized by cystic enlargement and overgrowth of terminal bronchioles which are surrounded by various epithelial cells.
Terminal bronchioles may become ectatic as the disease advances.
First, a clear topographic extension of the lesions was perceptible between the first and the last day of infection, with centrifugal spreading from the terminal bronchioles or the alveoli adjacent to the airways.
The virus's preference for type II pneumocytes, alveolar macrophages, and nonciliated cuboidal epithelial cells in terminal bronchioles "may contribute to the severity of the pulmonary lesion," they noted.
They also found the virus attaches mostly to alveolar macrophages, including some other cells in the terminal bronchioles.
However, lung biopsy did not demonstrate organizing pneumonia in the terminal bronchioles or alveolar spaces characteristic of BOOP.
As terminal bronchioles penetrate more deeply into the lungs, they divide into microscopic respiratory bronchioles.
The first 16 subdivisions of the bronchi ending in terminal bronchioles are called the conducting airways.
10]), because such particles can reach the terminal bronchioles and alveoli (6).
This case illustrates the classic findings of carbon pigment deposition around terminal bronchioles, dust macules, and mixed dust fibrosis.