Porto Systemic Anastomosis

Question 1

PORTAL VEIN

• (small or large?)
• (short or long?)
• ___cm long
• most of its course is in the ___________
• portal vein divides into left and right on entering the _______
• formed behind ________
• (well or poorly?) oxygenated blood
• ______-rich blood

Answer 1

Large

Short

5

hepatoduodenal ligament

portal hepatis

neck of pancreas

Poorly

nutrient

Question 2

PORTAL VEIN

• the alternative routes are important in cases of _________ or _______________
• this is possible because the portal vein and ___ are _________
• volume of blood passing through this alternative routes may be excessive leading to ____ that can be fatal
• streaming of blood occurs and this means
  1) splenic vein brings blood with broken down rbc left over over to the ___ liver lobe
  2) SMV passes its own content mostly to the ____ liver

Answer 2

extrahepatic or intrahepatic portal venous block

IVC ; valveless

varices

left

Right

Question 3

List the SITES for Porto systemic anastomoses

A)
_______

B)
________

C)
______

D)
________

Answer 3

Oesophagus

ANAL CANAL

anterior abdominal wall

That weird one

Question 4

SITES

A)
Oesophagus
_______ vein + ____ vein
Into ___ Into ___ vein

B)
ANAL CANAL
______ vein + ____________
Into ____ vein Into _____

C)anterior abdominal wall
_________ veins+ ________ vein

D)that weird one
_______ Veins + ______ veins like ____,____, or ______ veins

And ‘that weird one’ Occurs at ______ areas of __________ viscera

Answer 4

Left gastric; Portal

oesophageal; azygos

Superior rectal; portal

middle and inferior RV; IVC

Para umbilical; superficial epigastric

Visceral ; retroperitoneal; phrenic, renal or lumbar

posterior/bare

secondarily retroperitoneal

Question 5

If the Porto systemic anastomoses at the esophagus becomes dilated , it gives rise to a condition known as _________

Answer 5

Esophageal varices

Question 6

The Submucosa veins of the anal canal involved in Porto systemic anastomosis are normally dilated, except in new borns

T/F

Answer 6

F

Even in newborns

Question 7

When The Submucosa veins of the anal canal involved in Porto systemic anastomosis prolapse, they form __________

Answer 7

Hemorrhoids

Question 8

If the Porto systemic anastomoses at the anterior abdominal wall becomes dilated , they produce ________

Answer 8

Caput Medusa

Question 9

Porto systemic shunts

Joining the _____ to the portal vein

Joining the ____ vein to the ____ vein after splenectomy

Answer 9

Liver

Splenic

Left renal

Question 10

Porto systemic shunts works to reduce _____ by diverting blood from portal venous system to _________ system by creating a communication between the _____ and ____

Answer 10

Portal hypertension

Systemic venous

Portal vein and IVC