Uncategorized Coronary SinusAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt3 veins into common atrium2 horns left horn becomes the sinus venosus and right horn becomes SVC and IVCCommon CArdinal Veins (anterior and postUmbilical vein’from the placentaVitelline veins from yolk sac Right horn becomes incorporated into the right atrium as the smoot part and left horn becomes the coromnary sinusThe umbilical veins and left vitelline veins disappearAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt Fate of the veins as related to the HeartAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt Coronary SinusOblique vein of MarshallAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt Cardinal Veins Vitelline Veins and Umbilical Veins EarlyCardianal System2 systems connected by an oblique anastomosisVitelline SystemInfra hepatic portion connectedIntrahepatic portionleft and right – will develop intosinusoid and connect with developing hepatocytesSuprahepatic portion connect with both horns but will develop into suprahepatic IVCAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt Cardianal System2 systems connected by an oblique anastomosisLeft side resorbs and remains as the ligament of MarshallVitelline SystemInfra hepatic evolves into SMV and splenic veinIntrahepatic portionleft and right – will join and develop into sinusoids and connect with developing hepatocytesSuprahepatic portion Left connects with right to form a common channel as the suprahepatic portion of the nepatic veins and join the IVCAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt Cardianal System2 systems connected by an oblique anastomosisLeft side resorbs and remains as the ligament of MarshallVitelline SystemInfra hepatic evolves into SMV and splenic veinIntrahepatic portionleft and right – will join and develop into sinusoids and connect with developing hepatocytesSuprahepatic portion Left connects with right to form a common channel as the suprahepatic portion of the nepatic veins and join the IVCAcknowledging lecture of professor Hany Shawky Nadin from Ain Shams U Cairo Egypt