gill arch skeleton
Definition: cartilages associated with the visceral portion of the embryonic mammalian chondrocranium, representing the gill arch (branchial) skeletons as seen in shark-type fishes; they are the primordia of Meckel cartilage, the styloid, hyoid, cricoid, thyroid, and arytenoid cartilages, and the auditory ossicles.
See Also: branchial arches, under arch
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Examples: glitazone, GI cocktail, etc.