branchial arch

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Related to pharyngeal arch: pharyngeal pouch, second pharyngeal arch

branchial arch

[′braŋ·kē·əl ′ärch]
(vertebrate zoology)
One of the series of paired arches on the sides of the pharynx which support the gills in fishes and amphibians.
References in periodicals archive ?
Notice that dorsal elements in all pharyngeal arches are deleted at lower concentrations of RA than more ventral elements.
Pharyngeal arches from fish of the size class of bull chubs that consumed Asiatic clams and the size class of bull chubs that did not ingest Asiatic clams were compared.
DISCUSSION: Choristoma in tonsil could be a developmental abnormality of second pharyngeal arch. The surface epithelium and the lining of the tonsillar crypts of the tonsil develop from endoderm of the second pharyngeal pouch.
The thyroid gland arises from a midline thyroid diverticulum that forms from the endoderm in the floor of the pharynx just caudal to the 1st pharyngeal arch (2).The thyroid gland develops from a junction between tuberculum impar and hypobranchial eminence which forms the foramen caecum.
The specific anatomy of the larynx develops from 3rd to 6th pharyngeal arch. Pharyngeal arch cartilages from 1st to 3rd arch develop from neural crest while that of 4th and 6th develop from lateral plate mesoderm.
Treacher Collins syndrome (TCS) is a disorder of craniofacial development that affects differentiation of the first and the second pharyngeal arches (1, 2).
If there is a problem at the conjunction point of the cartilage tissue between the 4th and the 6th pharyngeal arches, the foramen can remain open (2, 3).