part of part of continuous with develops from pulmonary artery pharyngeal arch artery 6 heart blood vessel outflow tract systemic artery ductus arteriosus VHOG:0000923 MA:0001947 EHDAA:6462 MESH:D004373 EMAPA:17858 arterial canal Wikipedia:Ductus_arteriosus ductus layton FMA:79871 ductus botalli EFO:0002515 ductus arteriosum NCIT:C52854 galen:DuctusArteriosus SCTID:253684002 EHDAA2:0000420 A fetal blood vessel connecting the pulmonary artery with the descending aorta[MESH]. In the developing fetus, the ductus arteriosus is a shunt connecting the pulmonary artery to the aortic arch. It allows most of the blood from the right ventricle to bypass the fetus' fluid-filled lungs, protecting the lungs from being overworked and allowing the left ventricle to strengthen. There are two other fetal shunts, the ductus venosus and the foramen ovale[MP]. the fetal vessel that connects the left pulmonary artery with the descending aorta; the ductus arteriosus normally regresses into a fibrous cord, the ligamentum arteriousum after birth[MP]. arterial duct ductus arteriosis UBERON:0005440 fetal ductus arteriosus ductus Botallo Botallo's duct embryonic cardiovascular system