Portal System Flashcards
Name the 2 venous systems
Systemic system
Portal System
Drains into the IVC and back to the heart
Systemic system
Drains venous blood from the gastrointestinal tract, liver, gallbladder, spleen and pancreas to the liver
Portal System
Detoxifies partially deoxygenate, nutrient-rich blood from the abdominal viscera
Liver
At which vertebral level is the hepatic portal vein?
L2
What 2 veins does the hepatic portal vein split into?
Left and right hepatic portal veins
Name the 3 tributaries of hepatic portal vein`
- Right and left gastric vein
- Cystic vein
- Para-umbilical vein
Name the 4 tributaries of the splenic vein
- Short gastric vein
- Left gastro-omental vein
- Pancreatic vein
- Inferior mesenteric vein
Where does the inferior mesenteric vein drain into?
Splenic vein
What 4 structures does the inferior mesenteric vein drain?
Drains the hindgut
- Splenic flexure
- Descending colon
- Sigmoid colon
- Rectum
Where does the inferior mesenteric vein begin and end?
Begins- Superior rectal vein
Ends- draining into splenic vein
What 4 structures does the superior mesenteric vein drain?
- Small intestine
- Caecum
- Ascending colon
- Transverse colon
What are the 7 tributaries of the superior mesenteric vein?
- Right gastro-omental vein
- Anterior/posterior inferior pancreaticoduodenal vein
- Jejunal vein
- Ileal vein
- Ileocolic vein
- Right colic vein
- Middle colic vein
Anastomosis between the hepatic portal and systemic venous circulations
Portocaval anastomoses
What causes the anastomoses to become dilated and engorged (varices)
Portal hypertension