pharyngeal arch pharyngeal arch 2 FMA:293017 ZFA:0001611 pharyngeal arch 2 2nd pharyngeal arch The second pharyngeal arch will form the hyoid apparatus. The cranial neural crest cells that populate the second pharyngeal arch emerge primarily from rhombomere 4 and will form skeletal elements. 2nd arch EMAPA:16272 EHDAA:611 2nd visceral arch XAO:0000098 VHOG:0000297 SCTID:308768003 hyoid bars second pharyngeal arch NCIT:C34288 AAO:0010363 TAO:0001596 Wikipedia:Second_pharyngeal_arch UBERON:0003066 hyoid arch pharyngeal arches 2 EHDAA2:0000050