This site is intended for healthcare professionals
Last reviewed dd mmm yyyy. Last edited dd mmm yyyy
The trachea develops from the primitive oesophagus within the floor of the pharynx. In the ventrolateral wall of the oesophagus, a distinct laryngotracheal groove develops. The internal edges of this groove move towards the midline and eventually fuse. This delineates the original tube into ventral trachea and caudal oesophagus.