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gill arch

[gil] /gɪl/
noun
Origin
1875-1880
1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for gill arch
  • There it is chewed, so to speak, by teeth on the modified lower branches of the last gill arch.
  • If the fish is small, remove the entire gill arch and transfer to a slide.
  • The number of gill rakers on the upper and lower limbs of the first left gill arch were also recorded for each fish.
  • Wet mounts of gill filaments are made by using a small pair of surgical scissors to remove a portion of one gill arch.
  • Only lath-shaped gill rakers on the first gill arch are included in gill raker counts.
  • Gill rakers are often aligned in two rows on each gill arch, an outer row of longer rakers and an inner row of short stubs.
gill arch in Medicine

gill arch n.
See branchial arch.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for gill arch

branchial 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.

Learn more about branchial arch with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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