103 - Vessels, Nerves, Lymphatics of the Abdomen Flashcards
Where does the abdominal aorta start?
~T12/L1
Where does the AA divide into the common iliac arteries?
L4
Branches of the AA 1 2 3
1) 3x unpaired anterior branches 2) 3x paired lateral branches 3) Series of paired posterior branches
What do the posterior branches of the AA supply?
The walls of the aorta (including the diaphragm). The phrenic artery (for diaphragm) and lumbar arteries for abdominal walls.
What do the three paired branches of the AA supply? 1 2 3
1) Kidneys (left and right renal) 2) Adrenals (left and right suprarenal) 3) Gonads (left and right gonadal, testicular/ovarian)
What do the three unpaired anterior branches of the AA supply?
Abdominal viscera
Three unpaired branches of the AA
1) Coeliac 2) Superior mesenteric 3) Inferior mesenteric
Artery supplying derivatives of the primitive foregut
Coeliac artery
Artery supplying derivatives of the primitive midgut
Superior mesenteric artery
Artery supplying derivatives of the primitive hindgut
Inferior mesenteric artery
Structures supplied by the coeliac artery
Liver, gallbladder, pancreas, spleen, abdominal oesophagus, stomach, duodenum up to the major duodenal papilla
Structures supplied by the superior mesenteric artery
Duodenum from the major duodenal papilla until the transverse colon, proximal to the splenic flexure
Structures supplied by the inferior mesenteric artery
Last part of the transverse colon until the anal canal
Where does the coeliac trunk branch from the AA?
~T12
Branches from the coeliac trunk 1 2 3
1) Left gastric artery 2) Splenic artery 3) Common hepatic artery
Path of the left gastric artery 1 2 3 4
1) First unpaired anterior artery to branch form the AA. 2) Travels upwards, to the left. 3) Gives branches to abdominal oesophagus. 4) Runs along lesser curvature of stomach
Path of the splenic artery 1 2 3
1) Runs along superior border of the pancreas towards the hilum of the spleen. 2) Sends short gastric arteries to fundus of the stomach. 3) Sends left gastroepiploic arteries that line greater curvature
Structures supplied by splenic artery 1 2 3 4
1) Body, tail of the pancreas 2) Spleen 3) Fundus of stomach 4) Left gastroepiploic branches line greater curvature of stomach.
Path of the common hepatic artery 1 2 3 4 5 6 7
1) Travels to the right, to the free edge of the lesser omentum. 2) Splits into proper hepatic artery and gastroduodenal artery. Right gastric artery branches from common hepatic artery. 3) Proper hepatic artery ascends free edge of lesser omentum, then splits into right and left hepatic arteries. 4) Cystic artery often branches from right hepatic artery (variable) 5) Gastroduodenal artery descends, travels under 1st part of duodenum. 6) Right gastroepiploic artery branches to greater curvature under 1st part of duodenum. 7) Anterior superior pancreaticoduodenal artery branches.
* Coeliac trunk
COELIACARTERY
Branches of the superior mesenteric artery 1 2 3 4
1) Inferior pancreaticojejunal artery 2) Jejunal arteries 3) Ileac arteries 4) Colic arteries
Where does the superior mesenteric artery branch from the AA?
L1
Path of the superior mesenteric artery 1 2 3 4 5
1) Branches at L1 2) gives off inferior pancreaticoduodenal branch 3) Travels over the duodenum, aorta, right psoas 4) Branches to the left supply the small intestine (jejunal, ileac arteries) 5) Branches to the right supply the large intestine (colic arteries)
Path of colic arteries 1 2 3
1) Branch to the right from the superior mesenteric artery 2) Ileocolic, right colic, middle colic arteries 3) Colic arteries feed marginal artery that runs alongside the large intestine, branches from which supply large intestine.
