<prompt> Ductus venosus connects:Pulmonary trunk and descending aoaRight atrium and left atriumPoal vein and IVCPulmonary trunk and ascending aoa  <response>: In fetal circulation, ductus venosus shunts a poion of the left umbilical vein blood flow directly to the inferior vena cava. It allows oxygenated blood from the placenta to bypass the liver. The only related option appears to be choice c. Fig. : Fetal circulation 