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2009 ICD-9-CM
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| Branchial Region Branchial Arches | Branchial Clefts | Pharyngeal Arches | Visceral Arches | Branchial Arch | Pharangeal Arch | Visceral Arch | Arch, Branchial | Arch, Pharangeal | Arch, Visceral | Arches, Branchial | Arches, Pharyngeal | Arches, Visceral Region containing paired arched columns that bear gills in lower aquatic vertebrates and appear in the embryos of higher vertebrates in comparable form. In higher vertebrates the arches are subsequently modified into structures of the neck and ear. |