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Related to Pharyngeal arches: Pharyngeal pouches
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The development and evolution of the pharyngeal arches.
13) (It is interesting that velocardiofacial syndrome sequence deletions appear to be similar to those noted in DiGeorge syndrome, which is linked to malformations of the fourth and fifth pharyngeal arches.
The remaining posterior one-third of the tongue arises from a second swelling (the hypobranchial eminence or copula), which is made up of mesoderm of the second, the third, and a portion of the fourth pharyngeal arches.