GI-vasculature

Question 1

at which level is the coeliac trunk?

Answer 1

T12

Question 2

which structures does the coeliac trunk supply (7)?

Answer 2

all foregut derivatives

• oesophagus
• stomach
• liver
• gallbladder
• bile ducts
• pancreas
• proximal duodenum

Question 3

at which level is the superior mesenteric artery?

Answer 3

L1

Question 4

which structures does the superior mesenteric artery supply (7)?

Answer 4

all midgut derivatives

• distal duodenum
• jejunum
• ileum
• caecum
• appendix
• ascending colon
• proximal 2/3 of transverse colon

Question 5

at which level os the inferior mesenteric artery?

Answer 5

L3

Question 6

which structures does the inferior mesenteric artery supply (5)?

Answer 6

• all hind gut derivatives
• Distal 1/3 of the transverse colon
• descending colon
• sigmoid colon
• rectum
• upper anal canal

Question 7

name the 3 branches of the coeliac trunk

Answer 7

• left gastric artery
• splenic artery
• common hepatic artery

Question 8

name the branches of the left gastric artery

Answer 8

oesophageal branches

Question 9

what structures doe the left gastric artery supply?

Answer 9

• lesser curvature of stomach

- lower oesophagus (oesophageal branches)

Question 10

name the branches of the splenic artery

Answer 10

• short gastric artery

- LGO

Question 11

what structures does the splenic artery supply?

Answer 11

• stomach

- pancreas

Question 12

what structures does the short gastric artery supply?

Answer 12

stomach fundus

Question 13

what structures does the LGO supply?

Answer 13

greater curvature of stomach

Question 14

name the 3 branches of the common hepatic artery

Answer 14

• right gastric artery
• proper hepatic artery
• gastroduodenal

Question 15

which artery supplies the upper right 1/2 stomach?

Answer 15

right gastric artery

Question 16

what is the proper hepatic artery split into?

Answer 16

right and left hepatic artery

Question 17

what is supplied by the left hepatic artery?

Answer 17

left 1/2 liver

Question 18

what is supplied by right hepatic artery?

Answer 18

• right 1/2 liver

- gallbladder

Question 19

what does the gastroduodenal artery supply?

Answer 19

spleen/ pancreas/ duodenum

Question 20

what is the gastroduodenal artery split into (2)?

Answer 20

• SAPD/ SPPD

- RGO

Question 21

what artery supplies the head of the pancreas?

Answer 21

SAPD/ SPPD

Question 22

which artery supplies the lower right 1/2 of the stomach

Answer 22

RGO

Question 23

name the six branches of the superior mesenteric artery

Answer 23

• inferior pancreatico-duodenal artery
• jejunal arteries
• ileal arteries
• ileocolic
• right colic
• middle colic

Question 24

what is the inferior pancreatico-deuodenal artery split into and what does it supply?

Answer 24

• anterior/ posterior

- head of pancreas

Question 25

which artery supplies the jejunum?

Answer 25

jejunal arteries

Question 26

which artery supplies the ileum?

Answer 26

ileal arteries

Question 27

what is the ileocolic artery split into and what do they supply?

Answer 27

- anterior caecal-->anterior caecum - posterior caecal-->posterior caecum - appendicular-->appendix

Question 28

what is supplied by the right colic artery?

Answer 28

ascending colon

Question 29

what is supplied by the middle colic artery?

Answer 29

transverse colon

Question 30

what are the 3 branches of the inferior mesenteric artery?

Answer 30

- left colic - sigmoid arteries - superior rectal arteries

Question 31

what is the left colic artery split into?

Answer 31

- ascending branch | - descending branch

Question 32

what does the ascending branch of the colic artery supply?

Answer 32

transverse and descending colon

Question 33

what does the descending branch of the colic artery supply?

Answer 33

descending colon

Question 34

what supplies the sigmoid colon?

Answer 34

sigmoid arteries

Question 35

what is supplied by the superior rectal arteries?

Answer 35

upper rectum

Question 36

outline the venous drainage of the GI tract

Answer 36

inferior mesenteric vein----(empties into)---->splenic vein (joins with superior mesenteric vein)--(empties into hepatocytes)--->IVC

Question 37

what is an anastomosis?

Answer 37

connection between 2 vessels that allows blood to flow between them

Question 38

what is a portosystemic anastomosis?

Answer 38

communication between veins in hepatic veins and systemic venous system

Question 39

why is portosystemic anastomosis important?

Answer 39

it provides alternate routes of circulation if there is a blockage in the liver/portal vein

Question 40

what are the 3 main sites of portosystemic anastomosis?

Answer 40

- oesophagus - retcum - anterior abdominal wall

Question 41

what are the 2 types of lymph nodes in the GI tract?

Answer 41

- coeliac nodes | - inferior mesenteric nodes

Question 42

what do the coeliac nodes follow?

Answer 42

coeliac trunk

Question 43

what do the inferior mesenteric nodes follow?

Answer 43

IMA

Question 44

what do the 2 types of GI nodes drain into?

Answer 44

cisterna chyli

Question 45

what does the cisterna chyli become?

Answer 45

thoracic duct

Question 46

What supplies the pancreas?

Answer 46

pancreatic branches of the splenic artery & also superior and inf pancreaticoduodenal (branches of gastroduodenal)

Question 47

``` What supplies the ascending colon? A) Ileocolic artery B) Jejunal arteries C) Inferior pancreaticoduodenal D) Right colic artery E) Left colic artery ```

Answer 47

D-right colic artery

Question 48

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 ```

Answer 48

B