pharyngeal arch pharyngeal arch 1 1 A conserved feature of all vertebrate embryos is the presence of a series of bulges on the lateral surface of the head, the pharyngeal arches; it is within these structures that the nerves, muscles and skeletal components of the pharyngeal apparatus are laid down. The pharyngeal arches are separated by endodermal outpocketings, the pharyngeal pouches.[well established][VHOG] AAO:0010364 arcus pharyngeus primus EMAPA:16118 1st pharyngeal arch branchial arch 1 TAO:0001595 EHDAA2:0000006 uberon first branchial arch VHOG:0000296 1st visceral arch XAO:0000097 UMLS:C1517197 EHDAA:573 ZFA:0001612 FMA:293019 UBERON:0004362 visceral arch 1 The first of the series of bony or cartilaginous arches that develop in the walls of the mouth cavity and pharynx of the embryo.[AAO] MFMO:0000095 the first arch which contributes to development of mastication muscles, maxilla, mandible, incus, malleus, Meckel's cartilage, trigeminal nerve, and maxillary artery The first of the series of pharyngeal arches that develop into jaw bones or their homologs, and their associated nerves and arteries first pharyngeal arch CALOHA:TS-2089 first visceral arch mandibular arch 1st arch