al 
PARIETAL BRANCHES OF THE ABDOMINAL AORTA. 795 
mammary arteries. The eaternal branch passes outwards towards the lower ribs 
and anastomoses with the musculo-phrenic and lower intercostal arteries. 
In addition to supplying the diaphragm each inferior phrenic artery frequently 
gives a superior capsular branch to the suprarenal body of its own side, and occasion- 
ally small hepatic branches pass through the coronary ligament to the liver. 
Further, the left artery gives branches to the cesophagus which anastomose with 
Hepatic veins 
Csophagus 
Crus of diaphragm 
Inferior phrenic 
artery 
Inferior phrenic artery ’ 
Suprarenal body 
_ Coeliac axis 
Suprarenal body Suprarenal vein 
Suprarenal ve 
Superior 
mesenteric artery 
Inferior vena cava 
Renal artery 
. \ Renal artery 
Renal vein . ; 
Renal vein 
Lumbar arteries 
Right ovarian vein 
Ovarian artery Ureter 
Ureter Left colic artery 
Ovarian artery 
Z j \ Inferior mesenteric 
Psoas muscle — j 5 artery 
Descending colon 
z Psoas muscle 
ascending. colon Common iliae artery 
Common iliae vein 
Common iliac artery — 
Sigmoid artery 
—Common iliae vein 
Middle sacral artery Superior hemor 
Tleum—f rhoidal artery 
Lliae colon 
Czeeum —{ 
Pelvie colon 
External iliae 
External iliac artery 
artery ‘ 
External iliac —— aT T SS } \ : TM External iliac vein 
vein . : f 
Fallopian tube 
Urachus ~ 
Uterus 
Bladde1 
Fic. 566.—JHE ABDOMINAL AORTA AND ITS BRANCHES. 
cesophageal branches of the aorta and of the coronary artery, whilst from the artery 
of the right side minute branches pass to the inferior vena cava. 
2. The lumbar arteries (aa. lumbales) correspond to the intereostal branches of 
the thoracic aorta. They are in series with them, their distribution is very similar, 
and, like the intercostals, they arise, either separately or by common trunks, from 
the back of the aorta. 
There are usually four pairs of lumbar arteries, but occasionally a fifth pair 
arises from the middle sacral artery. 
From their origins the lumbar arteries pass backwards and outwards on the 
front and sides of the bodies of the upper four lumbar vertebrae to the interval 
~" 
. 
