Portal Vein

Question 1

Beginning

Answer 1

Behind pancreas neck by union of splenic and superior mesenteric veins

Question 2

Course

Answer 2

1. It ascends behind duodenum 1st part
2. Enters lesser omentum free margin
3. Ends in porta hepatis where it divides into right and left branches
   Has no valves, it allows blood passage in the 2 directions

Question 3

Relations in duodenum 1st part

Answer 3

1. Anterior: duodenum 1st part separated by common bile duct (anterior and to right) and gastroduodenal artery (anterior and to left)
2. Posterior: IVC

Question 4

Relations in lesser omentum free margin

Answer 4

1. Anterior: common bile duct (anterior and to right) and proper hepatic artery (anterior and to left)
2. Posterior: IVC (separated from it by epiploic foramen)

Question 5

Relations in porta hepatis

Answer 5

1. Anterior: hepatic artery
2. Posterior: caudate process of liver caudate lobe (separates it from IVC)

Question 6

Size

Answer 6

3 inches long
Up to 12 mm in diameter

Question 7

Tributaries

Answer 7

Beginning:
1. Splenic vein
2. Superior mesenteric vein
Termination:
3. Paraumbilical veins
4. Cystic vein
Join main trunk:
5. Right gastric vein
6. Left gastric vein

Question 8

Splenic vein beginning

Answer 8

At spleen hilum by union of 5-6 splenic tributaries

Question 9

Splenic vein course

Answer 9

1. Leaves spleen
2. Passes through lienorenal
3. Continuous to right behind pancreas body and in front of:
   - Left kidney and it’s hilum
   - Left sympathetic trunk
   - Left crus diaphragm
   - Abdominal aorta (but separated from it by superior mesenteric artery)

Question 10

Splenic vein termination

Answer 10

Behind pancreas neck by joining superior mesenteric vein forming portal vein (not tortuous (unlike splenic artery)

Question 11

Splenic vein tributaries

Answer 11

1. Splenic
2. Left gastroepiploic
3. Inferior mesenteric
4. Short gastric
5. Pancreatic

Question 12

Splenic

Answer 12

5-6 tributaries from spleen

Question 13

Short gastric

Answer 13

From stomach fundus

Question 14

Left gastroepiploic

Answer 14

From stomach greater curvature

Question 15

Pancreatic

Answer 15

From pancreas body

Question 16

Inferior mesenteric

Answer 16

Most important tributary continuation of superior rectal vein and receives superior and inferior left colic veins

Question 17

Superior mesenteric vein beginning

Answer 17

At lower end of mesentery root by union of midgut vein tributaries

Question 18

Superior mesenteric vein course

Answer 18

1. Ascends in root of small intestine mesentery along superior mesenteric artery right side
2. Ascends anterior to duodenum 3rd part and pancreas uncinate process

Question 19

Superior mesenteric vein termination

Answer 19

Behind pancreas neck by joining splenic vein forming portal vein

Question 20

Superior mesenteric vein tributaries

Answer 20

1. Middle colic
2. Right colic
3. Jejunal
4. Ileal
5. Pancreatico-duodenal
6. Ileocolic
7. Right gastroepiploic

Question 21

Middle colic

Answer 21

From transverse colon

Question 22

Right colic

Answer 22

From ascending colon

Question 23

Jejunal and Ileal

Answer 23

From small intestine

Question 24

Pancreatico-duodenal

Answer 24

From duodenum and pancreas head

Question 25

Ileocolic

Answer 25

From ileum and ascending colon

Question 26

Right gastroepiploic

Answer 26

From right part of stomach greater curvature

Question 27

Paraumbilical veins

Answer 27

Drain skin around umbilicus and accompany Ligamentum teres in falciform ligament to end in portal vein left branch

Question 28

Cystic vein

Answer 28

Drains gall bladder and ends in portal vein in right branch