Abdominal Arteries

Question 1

what are the 3 major branches from the descending aorta that supply the abdominal organs?

Answer 1

1. celiac
2. cranial mesenteric
3. caudal mesenteric

Question 2

describe the branching of the celiac artery

Answer 2

1. dorsal and ventral splenic branches
   1a. dorsal splenic branch gives off short gastric arteries (hilus of spleen to fundus of artery)
   1b. ventral splenic branch gives off left gastric epiploic artery
   1c. splenic also gives off pancreatic branches
2. left gastric artery
3. hepatic artery
   3a. hepatic branches
   3b. right gastric
   3c. gastroduodenal branch, which gives off right gastroepiploic (stomach and running in omentum) and cranial pancreaticduodenal

Question 3

describe the 3 main branches of the cranial mesenteric artery

Answer 3

1. ileocolic
2. caudal pancreaticduodenal: supplies pancreas and duodenum
3. jejunal arcades

Question 4

describe the branching of the ileocolic branch of the cranial mesenteric artery (4 branches plus name change termination)

Answer 4

there is a short common trunk of the ileocolic before
1. middle colic branch: supplies transverse colon
1a. middle colic gives off left colic branch that continues caudally and anastomoses with the left colic branch of the caudal mesenteric to supply the descending colon
2. right colic branch: supplies right colic flexure; anastomoses with middle and colic branch
3. colic branch: supplies ascending colon
4. cecal branch (supplies cecum): name changes/terminates as anti-mesenteric ileal caudally and supplies ileum
5. ileocolic terminates as mesenteric ileal and supplies the ileum along with the anti-mesenteric

Question 5

describe the branching of the caudal mesenteric artery (2)

Answer 5

1. left colic branch: supplies descending colon along with left colic branch of middle colic of ileocolic of cranial mesenteric
2. cranial rectal branch: supplies rectum