part of develops from start stage end stage dorsal aorta intersegmental vessel zebrafish_anatomy ZFA:0001285 intersegmental vessels TAO:0001285 intersomitic vessels Blood vessels that connect the dorsal aorta or the posterior cardinal vein and the dorsal longitudinal anastomotic vessel. They run along the vertical myotomal boundaries. At early stages these vessels don't have venous or arterial markers. segmental vessel trunk vasculature post-vent vasculature blood vessel unknown pharyngula:prim-5