respiratory diverticulum

(redirected from respiratory primordium)

respiratory diverticulum

the endodermal diverticulum from the floor of the caudal end of the primordial pharynx; it gives rise to the epithelium and glands of the bronchial tree. After this diverticulum separates from the foregut, it is referred to as a tube.

respiratory diverticulum

a pouchlike protrusion from the foregut that gives rise to the trachea, bronchi, and the branches that form the tracheobronchial tree.

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 ?
5 mm long, and the respiratory primordium divides into the fight and left lobes.