laryngotracheal diverticulum

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.

la·ryn·go·tra·che·al di·ver·tic·u·lum

(lă-ring'gō-trā'kē-ăl dī'vĕr-tik'yū-lŭm)
The outgrowth from the caudal end of the floor of the pharynx that gives rise to the larynx, laryngotracheal tube, and the esophagus.