BRANCHIAL ARCH
\bɹˈankɪəl ˈɑːt͡ʃ], \bɹˈankɪəl ˈɑːtʃ], \b_ɹ_ˈa_n_k_ɪ__ə_l ˈɑː_tʃ]\
Definitions of BRANCHIAL ARCH
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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.
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