ed et ay, 
. 
“3 
754 THE VASCULAR SYSTEM. 
intervening intervertebral dises, the anterior common ligament, and the left lumbar veins : 
the lumbar and the middle sacral arteries spring from this aspect of the vessel. In front, 
and in close relation with it, there are from above downwards the following structures : 
the coeliac axis and solar plexus, the pancreas and splenic vein, the superior mesenteric 
artery, the left renal vein, the third part of the duodenum, the root of the mesentery, the 
aortic plexus, the inferior mesenteric artery, the peritoneum and coils of small intestine. 
More superficially the stomach, the transverse colon, and the great omentum are in front. 
On the right sede, in the upper part of its extent, are the thoracic duct and receptaculum 
Hepatic veins 
Crus of diaphragm 
Inferior phrenic 
artery 
Suprarenal body 
Inferior phrenic artery 
ea Oe, 
Suprarenal body Cceliac axis 
Li 
vali 8 
NY: 
Suprarenal vein 
Superior 
mesenteric artery 
Inferior vena cava - 
Renal artery 
Renal artery 
Renal vein —— 
~ Renal vein 
Right ovarian vein 
Ovarian artery ——— i Ureter 
i f 
Wi 
ri | 
Wd 
—— Left colic artery 
— Ovarian artery 
_Inferior mesenteric 
artery 
~~ Descending colon 
i — Psoas muscle 
Ascending colon se 
i: ; Common iliac artery 
Common iliac vein Pe 
~~ Sigmoid artery 
Common iliae artery / a 5 
~Commion iliac vein 
Middle sacral artery " : 
Superior hemor- 
Tleum —# rhoidal artery 
| 
iy t— Tliac colon 
HI) 
j 
] e 
ff ~ Pelvie colon 
y| 
yh __ External iliac 
artery 
Cecum 
External iliac 
artery 
External iliac 
vein 
External iliae vein 
“Fallopian tube 
Urachus 
Fic. 553.—THE ABDOMINAL AORTA AND ITS BRANCHES, 
chyli, the vena azygos major, and the right crus of the diaphragm, the latter separat- 
ing it from the right semilunar ganglion and from the upper part of the inferior vena 
cava. In its lower part it is in direct relation with the inferior vena cava. On the 
left side, the left crus of the diaphragm with the left semilunar ganglion, and the fourth 
part of the duodenum, are in close relation with its upper part, whilst in the lower 
portion of its extent the peritoneum and some coils of the small intestine are in contact 
with it. 
Branches.—The branches form two groups, visceral and parietal, and each group: 
consists of paired and unpaired vessels, as follows :— 
