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visceral arches

 - 6 dictionary results

branchial arch

 
–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.
Also called gill arch, visceral arch.

Origin:
1870–75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: branchial arch
Function: noun
: one of a series of bony or cartilaginous arches that develop in the walls of the mouth cavity and pharynx of a vertebrateembryo, consist typically of a curved segmented bar or rod on each side meeting the contralateral bar or rod at the ventral end, and correspond to the gill arches of fishes and amphibians called alsopharyngeal arch, visceral arch

Main Entry: visceral arch
Function: noun
: BRANCHIAL ARCH
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

branchial arch n.
Any of usually six embryonic arches that give rise to specialized structures in the head and neck in the higher vertebrates. Also called gill arch, pharyngeal arch, visceral arch.

visceral 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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