gill arch definition

  • noun:
    • One of several bony or cartilaginous arches found on either region of the pharynx and supporting the gills in seafood and amphibians.
    • Embryology One of several matching arches into the embryo of a higher vertebrate that become structures of this ear and neck.
    • the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
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