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. [ MP:0010662 ]
Synonyms: intersegmental artery
Term information
- VHOG:0000225
- XAO:0004165
- SCTID:360401001
- MA:0001985
- TAO:0001061
- EHDAA2:0000882
- ZFA:0001061
- EHDAA:4340
- EMAPA:17616
pheno_slim, vertebrate_core
Arteries that connect the dorsal aorta and the dorsal longitudinal anastomotic vessel. They run along the vertical myotomal boundaries. At early stages these vessels don't have venous or arteriproperty_value external_definitionmarkers. They form from the primary sprouts from the dorsal aorta[ZFA:0001061].
Few changes of evolutionary significance occur in the branching pattern of the dorsal aorta. All vertebrates have (...) paired intersegmental arteries to the trunk, tail, and paired appendages.[well established][VHOG]