ANATOMY 2012-10-27

I. Celiac Trunk

II. Mesenteric Arteries

<I. Celiac Trunk>

Celiac Trunk

1. CHA (Common Hepatic A.) ; ~retroperitoneal
2. PHA: Proper Hepatic Artery ; intraperitoneal~
3. Cystic a.
4. GDA: Gastroduodenal Artery
5. Right and Left Gastric Artery: RGA: from proper hepatic a. // LGA: directly from celiac trunk
6. RGOA: Right Gastroomental Artery, from gastroduodenal a.
7. LGOA: Left Gastroomental Artery, from splenic a.
8. SA: Splenic Artery; supplies spleen and pancreas
9. Superior Pancreaticoduodenal Artery: from gastroduodenal a.
10. Inferior Pancreaticoduodenal Artery: from superior mesenteric a.

<II. Mesenteric Arteries>

Mesenteric Arteries

1. Superior Mesenteric Artery (L1): intraperitoneal, to the root of mesentery (oblique line; from jejunoduodenal flexure (left of L2) to right iliac fossa)
2. MCA: Middle Colic Artery: intraperitoneal.
   *Arch of Riolan: anastomosis between middle colic a. and left colic a.
3. RCA: Right Colic Artery: retroperitoneal → ascending colon
4. Jejunal, ileal, appendicular branches: anastomoses inbetween; bypasses easily.
5. ICA: Ileocolic Artery
6. IMA: Inferior Mesenteric Artery; give rise to LCA, Sigmoid a., and Superior Rectal a. *anastomoses btw. any 2 branches; bypass available in case of acclusion (thrombus)
7. SRA: Superior Rectal Artery: intraperitoneal
8. Sigmoid a.: intraperitoneal
9. LCA: Left Colic Artery: retroperitoneal

 

<Framework>

1. Celiac trunk: left lobe of liver removed
2. Superior Mesenteric a.: large intestine; transverse colon with Greater Omentum, transverse mesocolon; small intestine kept in place for mesentery.
3. Inferior Mesenteric a.: more to right upper part

 

Misc. structures in the region:

1. Portal vein: hepatoduodenal lig.
2. Fork: duodenum pressing on 2 large vessels: abdominal aorta, inferior vena cava; SMA et v.
3. Sympathetic plexus: superior mesenteric ganglion; embedded in mesentery, accompanied with vessels.
4. Treitz Hernia: retroperitoneal hernia; in duodenojenunal flexure.

 

celiac a.

1. left gastric a.
2. splenic a.
   1. short gastric arteries (6)
   2. splenic arteries (6)
   3. left gastroepiploic a.
3. common hepatic a.
   1. cystic a.
   2. right gastric a.
   3. gastroduodenal a.
      1. right gastroepiploic a.
      2. superior pancreaticoduodenal a.
   4. right hepatic a.
   5. left hepatic a.

superior mesenteric a.

1. jejunal and ileal arteries
2. inferior pancreaticoduodenal a.
3. middle colic a.
4. right colic a.
5. ileocolic a
   1. anterior cecal a.
   2. posterior cecal a. – appendicular a.
   3. ileal a.
   4. colic a.

inferior mesenteric a.

1. left colic a.
2. sigmoid arteries (2 or 3)
3. superior rectal a.