Number of liver segment marked ‘F” as per Couinaud
Correct Answer: IV
Description: F is segment IV In diagram G, H are II and III, E is I (caudate lobe) D, C, A, B are V, VI, VII, VIIIThe Couinaud classification of liver anatomy divides the liver into eight functionally indepedent segments.Each segment has its own vascular inflow, outflow and biliary drainage.In the centre of each segment there is a branch of the poal vein, hepatic aery and bile duct.In the periphery of each segment there is vascular outflow through the hepatic veins.Right hepatic vein divides the right lobe into anterior and posterior segments.Middle hepatic vein divides the liver into right and left lobes (or right and left hemiliver). This plane runs from the inferior vena cava to the gallbladder fossa.The Falciform ligament divides the left lobe into a medial- segment IV and a lateral pa - segment II and III.The poal vein divides the liver into upper and lower segments.The left and right poal veins branch superiorly and inferiorly to project into the center of each segment.
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