branchial arch

1. Zool. one of a series of bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians; gill bar.
2. Embryol. one of a series of archlike mesodermal thickenings of the body wall in the pharyngeal region of the embryo of amphibians, reptiles, birds, and mammals. Also called gill arch, visceral arch.
[1870-75]

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also called  Visceral Arch, or Gill Arch,  

      one of the bony or cartilaginous curved bars on either side of the pharynx (throat) that support the gills of fishes and amphibians; also, a corresponding rudimentary ridge in the embryo of higher vertebrates, which in some species may form real but transitory gill slits. In the human embryo, the branchial arches give rise to such structures as the mandible, hyoid bone, and larynx.

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Universalium. 2010.

Look at other dictionaries:

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  • branchial arch — noun one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians • Syn: ↑gill arch, ↑gill bar • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑bodily structure, ↑ …   Useful english dictionary

  • branchial arch — see pharyngeal arch …   The new mediacal dictionary

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  • branchial ray — the cartilaginous rod projecting out from the gill arch into the interbranchial septum which it supports and from the hyoid arch into the first hemibranch. Homologous with branchiostegal. Found in Elasmobranchii and Acanthodii …   Dictionary of ichthyology

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