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pharyngeal arches
 
Definition:
Biology Glossary search by EverythingBio.com
 
     
  AKA: visceral arches

columns of mesenchyme found in the neck of the developing vertebrate embryo derived from cranial neural crest. In lower vertebrates, blood vessels formed here become part of the gills; in higher vertebrates derivatives include portions of the jaw and middle ear. Also known as branchial arches, gill arches, or visceral arches.
 
     


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