A groove in the floor of the pharynx formed from the ventral diverticulum of endoderm that arises from the floor of the foregut caudal to the pharynx. This structure is the precursor for the larynx and trachea[WP,edited]. [ http://isc.temple.edu/marino/embryology/resp98/respdev.htm http://en.wikipedia.org/wiki/Laryngotracheal_groove ]
Synonyms: sulcus laryngotrachealis laryngo-tracheal groove
Term information
- VHOG:0001404
- NCIT:C34198
- Wikipedia:Laryngotracheal_groove
- EHDAA2:0004073
- EMAPA:16739
- SCTID:361426003
- EHDAA:1005
- RETIRED_EHDAA2:0000909
- UMLS:C1283960 (ncithesaurus:Laryngotracheal_Tube)
Note we currently have pharynx as part of the upper respiratory tract - separate by development?
Lung development begins with the appearance of the laryngotracheal groove, which is a small diverticulum that arises from the floor of the primitive pharynx at E9 in mouse and 4 wk in human.[well established][VHOG]
Term relations
- surface groove
- has potential to develop into some larynx
- has potential to develop into some trachea
- part of some foregut
- part of some embryo
- part of some lower respiratory tract