branchial arches — paired arched columns that bear the gills in lower aquatic vertebrates and that, in the embryos of higher vertebrates, appear in comparable form before subsequent modification into structures of the head and neck. Each one contains a… … Medical dictionary
Branchial — Bran chi*al, a. (Anat.) Of or pertaining to branchi[ae] or gills. [1913 Webster] {Branchial arches}, the bony or cartilaginous arches which support the gills on each side of the throat of fishes and amphibians. See Illustration in Appendix.… … The Collaborative International Dictionary of English
Branchial clefts — Branchial Bran chi*al, a. (Anat.) Of or pertaining to branchi[ae] or gills. [1913 Webster] {Branchial arches}, the bony or cartilaginous arches which support the gills on each side of the throat of fishes and amphibians. See Illustration in… … The Collaborative International Dictionary of English
branchial cleft — n one of the open or potentially open clefts that occur on each side of the neck region of a vertebrate embryo between the branchial arches, are formed by the meeting of an external furrow in the ectoderm with a pharyngeal pouch, may or may not… … Medical dictionary
branchial cleft — noun one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes • Syn: ↑gill slit, ↑gill cleft • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑bodily structure, ↑ … Useful english dictionary
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… … Universalium
branchial groove — Embryol. one of a series of rudimentary depressions on the surface of the embryo between adjacent branchial arches, homologous to the branchial clefts of gill breathing ancestral forms. Also called visceral groove. * * * … Universalium
branchial groove — Embryol. one of a series of rudimentary depressions on the surface of the embryo between adjacent branchial arches, homologous to the branchial clefts of gill breathing ancestral forms. Also called visceral groove … Useful english dictionary
branchial region — the area were the branchial arches and gills develop … Dictionary of ichthyology
branchial cleft — Zool. one of a series of slitlike openings in the walls of the pharynx between the branchial arches of fishes and aquatic amphibians through which water passes from the pharynx to the exterior. Also called visceral cleft. * * * … Universalium