Anatomy - Portosystemic anastamoses

Question 1

List the five sites of portosystemic anastamoses and the conditions they cause

Answer 1

1. Oesophageal - Oesophageal varices
2. Rectum - Rectal Varices
3. Retroperitoneal
4. Paraumbilical - Caput medusae
5. Intra Hepatic - Patent Ductus Venosus

Question 2

What is a portosystemic anastamoses?

Answer 2

Where the systemic and portal circulation meet

Question 3

What is the portal source and systemic source for oesophageal varices?

Answer 3

Portal - Left Gastric Vein

Systemic - Azygous

Question 4

What is the portal source and systemic source for rectal varices?

Answer 4

Portal - Superior Rectal vein

Systemic - Middle and inferior rectal vein

Question 5

What is the portal source and systemic source for intra heptatic anastamoses?

Answer 5

Portal - Portal Vein

Systemic - IVC

Question 6

What is the portal source and systemic source for paraumbilical anastamoses?

Answer 6

Portal - Paraumbilical veins

Systemic - Superficial epigastric veins

Question 7

What is the portal source and systemic source for retroperitoneal?

Answer 7

Portal - Colic veins

Systemic - Renal veins