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]. [ GOC:dph http://amigo.geneontology.org/amigo/term/GO:0060037 ]

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 complex

pharyngeal arch complex

pharyngeal arch region

id

UBERON:0008814