branchial arch

American  

noun

1. Zoology. 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. Embryology. 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.

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Etymology

Origin of branchial arch

First recorded in 1870–75

Example Sentences

A transitory arch, it is now known, however, appears between the second branchial and the last, and it is therefore the fourth branchial arch which is the pulmonary, just as it is in the frog.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

A more probable view is that it develops from rests derived from the first branchial arch an not from the parotid.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander

A somewhat different account to this is still found in some text-books of the fate of this third branchial arch.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

The third branchial arch is only cartilaginous at the foremost part, and here the body of the hyoid bone and its larger horn are formed at each side by the junction of its two halves.

From The Evolution of Man — Volume 2 by Haeckel, Ernst Heinrich Philipp August

The front branchial arch here, as in all higher vertebrata, becomes the carotid arch; the lingual represents the base of a pre-branchial vessel; the second branchial becomes the aortic arch.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)