Canine GI blood supply

What are the four main arteries of the abdominal wall?

where do these lie? (cr, ca, ve, do)

• cranial abdominal

  • cranio-dorso-lateral

• deep external iliac

  • caudo-dorsal-lateral

• cranial epigastric (splits into cranial superficial epigastric)

  • cranio-ventral-lateral

• caudal epigastric (splits into caudal superficial epigastric)

  • caudo-ventral-lateral

What are the three main arteries of the abdominal organs?

What (vaguely) do these supply

Caeliac - cranial abd organs

Cranial mesenteric - mid-abdominal organs

Caudal mesenteric - caudal abdominal organs

Name ALL the branches of the caeliac artery.

Hepatic artery

• hepatic branches

  • cystic artery

  • R gastric (lesser curve)

  • Gastro duodenal

    • R gastroepiploic

    • Cranial pancreatico-duodenal (cr R lobe of panc)

  • L gastric (lesser curv)

    • oesophageal branches

  • Splenic

    • Short gastric (greater curve)

    • pancreatic branches (left lobe)

    • Left gastro epiploic (greater curve)

List ALL branches of the cranial mesenteric artery

Ileo-colic

• middle colic (transverse colon)

• right colic (R colic flexure)

• Colic branch of ileo-colic (ascending colon)

• caecal branch of ileocolic (caecum)

  • anti-mesenteric ileal

• Mesenteric ileal

Caudal pancreatico-duodenal (caudal right lob of pancreas / duodenum)

Jejunal

List ALL the branches of the caudal mesenteric artery

Left colic (supplying left colic flexure / descending colon)

Cranial rectal (cranial rectum)

What artery supplies the kidneys

paired left / right renal a

What artery supplies the gonads

paired left/right ovarian/testicular arteries.

What is a benefit of vessels anastomosing

safety- if one gets blocked / occluded, organ can still receive blood via a different route

Describe venous drainage of the gi system

all blood drained via the hepatic portal vein

enables liver to metabolise / detox

returns to general circulation via hepatic vein → caudal vena cava

Describe venous drainage of non-gi abdominal organs.

drain directly into vena cava

In what vessels do the veins NOT mimic the arteries

No celiac vein.

• hepatic portal vein → liver → hepatic vein → vena cava

• left gastric drains into splenic NOT hepatic portal.

How is the ruminant blood supply to stomach different to that of a dog (and horse / pig)

Complex stomach

• ruminoreticulum supplied by left / right gastroepiploic

• Omasum supplied by left / right gastric

How does the blood supply to caecum differ in dogs/ruminants vs horse/pig?

Dogs / Ruminants

• small caecum

  • supplied by -

    • caecal branch of ileocolic

    • antimesenteric ileal branch to ileum

Horse / Pig

• large caecum

  • Medial caecal

  • lateral caecal

What BV is represented by the purple line?

Celiac artery

What BV is represented by the blue line?

Cranial mesenteric

What BV is represented by the pink line?

Caudal mesenteric

What BV is represented by the purple lines

Cranial abdominal

what BV is represented by the blue line?

deep external iliac

What Bv is represented by the yellow line

Caudal epigastric

What bv is represented by the pink line?

Cranial epigastric