pharyngeal pouch
An internal pocketing of pharyngeal endoderm that contacts a region of ectoderm (a pharyngeal cleft) and interdigitates in the anterior and posterior directions with the pharyngeal arches. [ http://www.ncbi.nlm.nih.gov/pubmed/23020903 http://orcid.org/0000-0002-6601-2165 ]
Term info
pharyngeal pouch
- branchial pouch
- visceral pouch
- EMAPA:32752
- http://en.wikipedia.org/wiki/Pharyngeal_pouch_(embryology)
- http://linkedlifedata.com/resource/umls/id/C0231067
- http://www.snomedbrowser.com/Codes/Details/34674002
- AAO:0011113
- EFO:0003627
- EHDAA:1086
- EHDAA:1669
- EHDAA:579
- EHDAA:617
- FMA:293063
- NCIT:C34252
- TAO:0001106
- UMLS:C0231067 (ncithesaurus:Pharyngeal_Pouch)
- VHOG:0001203
- XAO:0000282
- ZFA:0001106
efo_slim, pheno_slim, vertebrate_core
The pouches are polarized structures. For example, whereas the rostral half of each pouch expresses Bmp-7, the caudal half expresses FGF-8 and the dorsal aspect of each pouch is marked via its expression of Pax-1. each pouch has an individual sense of identity. Shh expression is a prominent early feature of the caudal endoderm of the second arch, and individual pouches mark the anterior limits of expression of Hox genes within the pharyngeal endoderm; Hox-a2 has a rostral boundary at the second pouch, Hox-a3 at the third pouch and Hox-a4 at the most caudal pouch[PMID:16313389]
Outpocketings of pharyngeal endoderm that interdigitate with the neural crest derived pharyngeal arches. The pouches later fuse with the surface ectoderm to form the gill slits. Crump et al, 2004.[TAO]
EMAPA also includes a distinct pouch endoderm
uberon
pharyngeal pouches, visceral pouches
A conserved feature of all vertebrate embryos is the presence of a series of bulges on the lateral surface of the head, the pharyngeal arches; it is within these structures that the nerves, muscles and skeletal components of the pharyngeal apparatus are laid down. The pharyngeal arches are separated by endodermal outpocketings, the pharyngeal pouches.[well established][VHOG]
UBERON:0004117
Term relations
- endoderm of foregut
- embryonic tissue
- embryonic structure
- develops_from some early pharyngeal endoderm
- has part some (part of some pharyngeal arch)
- part of some pharyngeal arch system