39. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
40. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
41. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
42. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
43. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
44. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
45. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
46. Venous drainage of GI Tract
• Veins follow (+/-) arteries
• inferior mesenteric vein
drains to splenic vein
• splenic vein joins
superior mesenteric vein
to form the portal vein
porta hepatis
47. Venous drainage of GI Tract
Hepatic veins
Hepatic artery
Portal vein
IVC
.
.
48. Venous drainage of GI Tract
• Nutritents and substances absorbed from the
GI tract
• Disease spread (eg tumour spread) from the
GI tract to liver
• Portal hypertension – varicies
49. Venous drainage of GI Tract
Capillary
circulation in
the liver
Oesophageal veins
draining into left
gastric vein
Connection between
superior rectal vein (portal)
and middle rectal vein
(systemic)
50. Venous drainage of GI Tract
Oesophageal veins
draining into left
gastric vein
Connection between
superior rectal vein (portal)
and middle rectal vein
(systemic)
OESOPHAGEAL VARICIES
HAEMORRHOIDS
51. The End
• Why don’t you take some exam questions on
this topic from our MCQ’s section