MRCP UK EXAMINATIONS

Detailed explanation-1: -The renal portal system takes the blood from the caudal vein in the tail to the kidneys via the two renal portal veins. The blood enters the kidneys on afferent renal veins, which connect, via capillaries to efferent renal veins, which drain the kidneys into the posterior cardinal sinuses.

Detailed explanation-2: -The portal venous system drains blood to the liver from the abdominal part of the alimentary canal (except the anus), the spleen, pancreas and gall bladder.

Detailed explanation-3: -The portal vein receives drainage from the gallbladder, spleen, pancreas, stomach, and small and large intestines. The portal vein forms from the confluence of the superior and inferior mesenteric veins, the splenic vein, gastric vein, and cystic vein.

Detailed explanation-4: -The hepatic portal vein does not return blood to the inferior vena cava. The hepatic veins carry the blood back to the inferior vena cava.