ends during starts during aortic arch aortic arch 3 XAO:0000344 third aortic arch UBERON:0003120 xenopus_anatomy The third in a series paired arterial connections between the dorsal and ventral aortae. Aortic arch 3 lies within the 3rd branchial arch and branches directly from the ventral aorta to the lateral dorsal aorta, and are retained as the branchial arteries providing circulation through the gills in the adult. NF stage 32 NF stage 66