Portal Vein

Question 1

Portal vein collects blood from

Answer 1

Abdominal part of alimentary canal
Gallbladder
Pancreas
Spleen
Liver

Question 2

Portal vein drains blood from

Answer 2

Abdominal part pf alimentary canal
Gallbladder
Pancreas
Spleen
Liver

Question 3

Why is it called portal vein

Answer 3

Because superior mesenteric vein begins in one set of capillary and portal veins ends in another set of capillary

Question 4

Formation of portal vein
Location of formation

Answer 4

8 cm long
It is formed by union of superior mesenteric vein and splenic vein
It is formed behind the neck of pancreas

Question 5

Course of portal vein

Answer 5

Runs upwards and to the right
First behind neck of pancreas
Second behind first part of duodenum
Third free margin of lesser omentum

Question 6

Streamline flow

Answer 6

Blood flow in portal vein is small
Blood from superior mesenteric vein drains into the right lobe
Blood from splenic vein and inferior mesenteric vein drains in left lobe

Question 7

Termination of portal vein

Answer 7

At the right end of porta hepatis by dividing into right and left branches which enter the liver

Question 8

Relations of infraduodenal part of portal vein

Answer 8

Anteriorly neck of pancreas
Posteriorly inferior vena cava

Question 9

Relations of retroduodenal part of portal vein

Answer 9

Anteriorly first part of duodenum and bile duct
Posteriorly inferior vena cava

Question 10

Supraduodenal part of portal vein

Answer 10

Anteriorly hepatic artery and bile duct
Posteriorly inferior vena cava

Question 11

Intrahepatic course of portal vein

Answer 11

In liver each branch divides and redivides along with hepatic artery to end in the hepatic sinusoids where portal venous blood and hepatic arterial blood mixes

Question 12

Branches of portal vein in detail

Answer 12

Right branch is shorter and wider, after receiving the cystic vein it enters the the right lobe of liver
Left branch is longer and narrower. It traverses the the porta hepatis from its right to left end and gives branches to cuadate and quadrate lobes.

Question 13

Tributaries of portal vein

Answer 13

Left gastric
Right gastric
Superior pancreaticoduodenal
Cystic vein
Paraumblical vein

Question 14

Tributaries of portal vein in detail

Answer 14

Left gastric vein accompanies right gastric vein. At cardiac end of stomach it receives oesophageal veins.
Right gastric vein accompanies the corresponding artery. It receives prepyloric vein