GI-vasculature Flashcards
at which level is the coeliac trunk?
T12
which structures does the coeliac trunk supply (7)?
all foregut derivatives
- oesophagus
- stomach
- liver
- gallbladder
- bile ducts
- pancreas
- proximal duodenum
at which level is the superior mesenteric artery?
L1
which structures does the superior mesenteric artery supply (7)?
all midgut derivatives
- distal duodenum
- jejunum
- ileum
- caecum
- appendix
- ascending colon
- proximal 2/3 of transverse colon
at which level os the inferior mesenteric artery?
L3
which structures does the inferior mesenteric artery supply (5)?
- all hind gut derivatives
- Distal 1/3 of the transverse colon
- descending colon
- sigmoid colon
- rectum
- upper anal canal
name the 3 branches of the coeliac trunk
- left gastric artery
- splenic artery
- common hepatic artery
name the branches of the left gastric artery
oesophageal branches
what structures doe the left gastric artery supply?
- lesser curvature of stomach
- lower oesophagus (oesophageal branches)
name the branches of the splenic artery
- short gastric artery
- LGO
what structures does the splenic artery supply?
- stomach
- pancreas
what structures does the short gastric artery supply?
stomach fundus
what structures does the LGO supply?
greater curvature of stomach
name the 3 branches of the common hepatic artery
- right gastric artery
- proper hepatic artery
- gastroduodenal
which artery supplies the upper right 1/2 stomach?
right gastric artery
what is the proper hepatic artery split into?
right and left hepatic artery
what is supplied by the left hepatic artery?
left 1/2 liver
what is supplied by right hepatic artery?
- right 1/2 liver
- gallbladder
what does the gastroduodenal artery supply?
spleen/ pancreas/ duodenum
what is the gastroduodenal artery split into (2)?
- SAPD/ SPPD
- RGO
what artery supplies the head of the pancreas?
SAPD/ SPPD
which artery supplies the lower right 1/2 of the stomach
RGO
name the six branches of the superior mesenteric artery
- inferior pancreatico-duodenal artery
- jejunal arteries
- ileal arteries
- ileocolic
- right colic
- middle colic
what is the inferior pancreatico-deuodenal artery split into and what does it supply?
- anterior/ posterior
- head of pancreas
which artery supplies the jejunum?
jejunal arteries
which artery supplies the ileum?
ileal arteries
what is the ileocolic artery split into and what do they supply?
- anterior caecal–>anterior caecum
- posterior caecal–>posterior caecum
- appendicular–>appendix
what is supplied by the right colic artery?
ascending colon
what is supplied by the middle colic artery?
transverse colon
what are the 3 branches of the inferior mesenteric artery?
- left colic
- sigmoid arteries
- superior rectal arteries
what is the left colic artery split into?
- ascending branch
- descending branch
what does the ascending branch of the colic artery supply?
transverse and descending colon
what does the descending branch of the colic artery supply?
descending colon
what supplies the sigmoid colon?
sigmoid arteries
what is supplied by the superior rectal arteries?
upper rectum
outline the venous drainage of the GI tract
inferior mesenteric vein—-(empties into)—->splenic vein (joins with superior mesenteric vein)–(empties into hepatocytes)—>IVC
what is an anastomosis?
connection between 2 vessels that allows blood to flow between them
what is a portosystemic anastomosis?
communication between veins in hepatic veins and systemic venous system
why is portosystemic anastomosis important?
it provides alternate routes of circulation if there is a blockage in the liver/portal vein
what are the 3 main sites of portosystemic anastomosis?
- oesophagus
- retcum
- anterior abdominal wall
what are the 2 types of lymph nodes in the GI tract?
- coeliac nodes
- inferior mesenteric nodes
what do the coeliac nodes follow?
coeliac trunk
what do the inferior mesenteric nodes follow?
IMA
what do the 2 types of GI nodes drain into?
cisterna chyli
what does the cisterna chyli become?
thoracic duct
What supplies the pancreas?
pancreatic branches of the splenic artery & also superior and inf pancreaticoduodenal (branches of gastroduodenal)
What supplies the ascending colon? A) Ileocolic artery B) Jejunal arteries C) Inferior pancreaticoduodenal D) Right colic artery E) Left colic artery
D-right colic artery
A patient was diagnosed with bleeding ulcer of the lesser curvature of the stomach. Which artery is most likely involved?
A-Gastroduodenal B-Left Gastric C-Left gastro-omental (epiploic) D-Right gastro-omental (epiploic) E-Short gastrics
B
