这个词是什么意思？
A region, of SOMITE development period, that contains a number of paired arches, each with a mesodermal core lined by ectoderm and endoderm on the two sides. In lower aquatic vertebrates, branchial arches develop into GILLS. In higher vertebrates, the arches forms outpouchings and develop into structures of the head and neck. Separating the arches are the branchial clefts or grooves.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001934 · MeSH 2026。
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