AORTA

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AORTA

• Corazon D. Padilla

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ABDOMINAL AORTA

• Passes through the abdominal cavity through the
  aortic hiatus in the diaphragm to become the
  abdominal aorta.
• Ends in considerably diminished size of 1.75 cm.
  in diameter opposite the lower border of the 4th
  lumbar vertebra and divides into right and left
  common iliac artery.

3
VENTRAL BRANCHES

• Coeliac- 1st branch of the abdominal aorta, is
  2-3 cm long and branches into
• 1) Splenic artery- runs superior to the
  pancreas, enters splenic hilum, supplies pancreas
  and spleen.
• 2) Left gastric artery- supplies the stomach
• 3) Common Hepatic Artery- supplies 20 of
  blood to liver, enters the porta hepatis w/
  portal vein.

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Coeliac Artery and its branches
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Proximal Aorta Sagital
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Proximal Aorta-Transverse

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Superior Mesenteric Artery

• 2nd branch of the abdominal aorta.
• Lies posterior to the body of the pancreas and
  anterior to the aorta in the transverse section.
• Supplies the small intestine, ascending colon,
  part of the transverse colon.

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Superior Mesenteric Artery and its branches
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Proximal Aorta-Transverse

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Renal Arteries

• There are 2 renal arteries, right and left renal
  artery.
• Right renal artery is the only vessel that runs
  posterior to the inferior vena cava.

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Aorta Transverse Renal Arteries

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Inferior Mesenteric Artery

• Originates from the abdominal aorta close to the
  umbilicus at the level of the 3rd or 4th lumbar
  vertebra and rarely seen on ultrasound.
• Supplies the transverse, descending, and sigmoid
  colon and rectum.

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Iliac Arteries

• Common iliac arteries branches into right and
  left internal and external iliac arteries.
• Internal iliac artery enter the pelvis supplying
  the uterus, prostate, pelvic muscles and other
  pelvic organ.
• External iliac artery continues distally and
  becomes common femoral artery below the inguinal
  ligament.

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Aorta Transverse - Bifurcation

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CIAs Transverse