artery intersomitic artery SCTID:360401001 XAO:0004165 intersegmental artery UBERON:0002457 EHDAA2:0000882 VHOG:0000225 EMAPA:17616 EHDAA:4340 TAO:0001061 ZFA:0001061 MA:0001985 The small branching sprouts of the dorsal aorta that grow across the medial surface of the somite, turn right angles to grow over that surface and then fuse with other sprouts and form the vertebral arteries adjacent to the neural tube; the intersomitic arteries supply the body wall and persist in the adult as the posterior intercostal, subcostal and the lumbar arteries. intersomitic vessel