tracheobronchial diverticulum

tra·che·o·bron·chi·al di·ver·tic·u·lum

the endodermal lung primordium that will give rise to the epithelial lining of the respiratory tract.

res·pi·ra·to·ry di·ver·tic·u·lum

(res'pir-ă-tōr-ē dī'vĕr-tik'yū-lŭm)
Primordial pharynx that gives rise to the epithelial lining of the respiratory tract on glands of the bronchial tree.
Synonym(s): lung bud, tracheobronchial diverticulum.
References in periodicals archive ?
The pharyngeal gut extending from the buccopharyngeal membrane to the tracheobronchial diverticulum consists of pharyngeal (branchial) archs, pharyngeal clefts, and pharyngeal pouches.
At the 4th week of development, the respiratory diverticulum (tracheobronchial diverticulum) appears at the ventral wall of the foregut.