A transient embryonic complex that comprises the pharyngeal arches, bulges of tissues of mesoderm and neural crest derivation through which pass nerves and pharyngeal arch arteries. The arches are separated internally by pharyngeal pouches, evaginations of foregut endoderm, and externally by pharyngeal clefts, invaginations of surface ectoderm. The development of the system ends when the stucture it contributes to are forming, which may include (depending on species) the thymus, thyroid, parathyroids, maxilla, mandible, aortic arch, cardiac outflow tract, external and middle ear[GO,modified]. [ http://amigo.geneontology.org/amigo/term/GO:0060037 GOC : dph ]

This is just here as a test because I lose it

Term information

database cross reference
definition
  • A transient embryonic complex that comprises the pharyngeal arches, bulges of tissues of mesoderm and neural crest derivation through which pass nerves and pharyngeal arch arteries. The arches are separated internally by pharyngeal pouches, evaginations of foregut endoderm, and externally by pharyngeal clefts, invaginations of surface ectoderm. The development of the system ends when the stucture it contributes to are forming, which may include (depending on species) the thymus, thyroid, parathyroids, maxilla, mandible, aortic arch, cardiac outflow tract, external and middle ear[GO,modified].
editor note
  • Currently defined in a vertebrate specific manner. The arch system has origins in basal deuterostomes, consider generalizing
has exact synonym
  • pharyngeal system
  • embryonic pharyngeal complex
  • pharyngeal apparatus
has related synonym
  • pharyngeal arches and clefts
  • pharyngeal arch complex
  • pharyngeal arch region
  • pharyngeal complex
id
  • UBERON:0008814