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branchial arch

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branchial arch
n.
Any of usually six embryonic arches that give rise to specialized structures in the head and neck in the higher vertebrates. Also called gill arch, pharyngeal arch, visceral arch.

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The first branchial arch gives rise to mandibular and maxillary processes.
This associates the cervical cleft with other midline clefts such as cleft lip and cleft palate, which are caused by a failure of fusion of the first branchial arch.
Almost one of every five cervical masses in the pediatric population is of branchial arch origin.
 
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