connection that forms when the respiratory diverticulum is divided by the tracheoesophageal fold; its upper end forms the larynx and its middle part forms the trachea.
the embryonic endodermal tube that is split off from the primordium of the oropharynx and esophagus when the tracheoesophageal septum divides the cranial part of the foregut. It constitutes the primordium of the larynx, trachea, bronchi, and lungs.
la·ryn·go·tra·che·al tube(lă-ring'gō-trā'kē-ăl tūb)
The endodermal tube that forms when the laryngotracheal diverticulum is divided by the tracheoesophageal fold; its upper end forms the larynx and its middle, the trachea.