Student Dictionary

One entry found for gill arch.
Main Entry: gill arch
Function: noun
1 : one of the several bars of bone or cartilage that occur in pairs with one of each pair on each side of the throat and that support the gills of fishes and amphibians
2 : one of the undeveloped ridges that occur in the embryos of all higher vertebrates and correspond to the gill arches of fishes and amphibians

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