Flashcards in 9. Abdominal aorta and branches Deck (17)
1. arteries supplying GI structures branch arteriorly
2. Arteries supplying non-GI structures branch laterally and posteriorly
Abdominal aorta is divided to ( and where)
right and left common iliac ( at L4)
(ALSO at median sacral artery )
anterior branches ( and area)
1. celiac trunk ( T12 to L1)
2. Superior mesenteric ( L1)
3. Inferior mesenteric ( L3)
lateral branches ( and area) (upper to lower)
1. Left inferior phrenic
2. middle suprarenal artery ( each side) (t12)
3. renal artery ( each side) ( above L1)
4. first lumbar artert ( each side) (L1)
5. gonadal ( testicular / ovarian ) arteries ( each side) ( between L1 and L2 , under renal artery )
6. second lumbar artery ( L2)
7. third lumbar artery L3
8. fourth lumbar artery L4
superior mesenteric artery syndrome - symptoms
intermittent intestinal obstruction symptoms ( primarily postprandial pain )
superior mesenteric artery - mechanism ( and occurs when ...)
transverse (3rs) portion of duodenum is compressed between SMA and aorta --> typically occurs in conditions associated with diminished mesenteric fat ( eg. low eright / malnurtrion ) --> interminttent intestinal obstruction symptoms ( primarily postprandial pain)
common internal artery is divided to ( and where)
1. internal and external iliac artery ( slightly below L5)
renal artery - branch before kidney
inferior suprarenal artery
• Which branch of the aorta comes off at the level of L1?
The superior mesenteric artery
• A patient with abdominal aortic dissection has a new abdominal bruit. What level of the aorta has the dissection possibly reached?
L1 level (an abdominal bruit is concerning for renal artery involvement)
• At what level does the abdominal aorta bifurcate?
L4 (bifourcation of abdominal aorta)
• Which three arteries does the aorta become after the bifurcation?
Left and right common iliac arteries, median sacral artery
• Arteries supplying GI structures branch ____(anteriorly/laterally) from aorta, whereas other arteries branch ____ (anteriorly/laterally).
• A woman presents with a transverse portion of her duodenum entrapped between the SMA and aorta. What type of intestinal obstruction is this?
Superior mesenteric artery (SMA) syndrome
• A vascular surgeon accidentally cuts into a branch of the aorta originating at the T12 level. Name an artery that may be compromised.
The left inferior phrenic artery (the surgeon has cut into the celiac trunk)
• The common iliac arteries further bifurcate into which two major arteries?
The internal and external iliac arteries