Download 06-Aorta & IVC

Dr. Ahmed Fathalla Ibrahim
ABDOMINAL AORTA
BEGINNING:
 A continuation of descending thoracic
aorta after passing through aortic
opening of diaphragm (opposite T12)
TERMINATION:
 Divides into 2 common iliac arteries
(opposite lower part of L4)
ANTERIOR RELATIONS OF
ABDOMINAL AORTA
ANTERIOR RELATIONS OF
ABDOMINAL AORTA
2 pancreas, 2 intestine, 2 veins, 2
superior mesenteric
 Body & uncinate process of
pancreas
 Splenic & left renal veins
 Third part of duodenum
 Coils of small intestine
 Superior mesenteric vessels
RELATIONS OF
ABDOMINAL
AORTA
POSTERIOR:
 Bodies of
lumbar vertebrae
RELATIONS OF
ABDOMINAL
AORTA
RIGHT:
IVC
Cysterna chyli
Azygos vein
Right crus
LEFT:
Left sympathetic
trunk
Left psoas major
Left crus
BRANCHES OF ABDOMINAL
AORTA
SINGLE BRANCHES OF
ABDOMINAL AORTA
Three arising from anterior aspect of
aorta:
1)Celiac trunk (upper part of L1)
2)Superior mesenteric (lower part of L1)
3)Inferior mesenteric (L3)
One arising from termination of aorta:
1)Median sacral (lower part of L4)
PAIRED BRANCHES OF
ABDOMINAL AORTA
Three pairs arising from anterior aspect
of aorta:
1)Inferior phrenic (upper part of L1)
2)Suprarenal (lower part of L1)
3)Gonadal (testicular or ovarian) (L3)
One pair arising from lateral aspect of
aorta:
1)Renal (L2)
PAIRED BRANCHES OF
ABDOMINAL AORTA
Four pairs arising from posterior
aspect of aorta:
1)Lumbar
One pair arising from termination of
aorta:
1)Common iliac (Lower part of L4)
COMMON ILIAC ARTERIES
BEGINNING:
• Terminal branches of abdominal aorta
(lower part of L4)
TERMINATION:
• Each one bifurcates into external &
internal iliac arteries (lower part of L5)
COURSE & RELATIONS:
• Descend along medial border of psoas
• End anterior to sacroiliac joint
• The bifurcation is crossed by ureter
EXTERNAL ILIAC ARTERY
BEGINNING:
• One of 2 terminal branches of common
iliac artery (lower part of L5)
TERMINATION:
• Continues as femoral artery, behind
inguinal ligament
BRANCHES:
1)Deep circumflex iliac
2)Inferior epigastric
INFERIOR VENA CAVA
BEGINNING:
• Formed by union of 2 common iliac
veins (L5)
TERMINATION:
• Pierces central tendon of diaphragm at
level of T8
• Opens in the right atrium at level of
right 6th costal cartilage
RELATIONS OF INFERIOR
VENA CAVA
RELATIONS OF INFERIOR
VENA CAVA
ANTERIOR:
• Liver
• Epiploic foramen,
• First part of duodenum,
• Head of pancreas
• Third part of duodenum
• Superior mesenteric vessels
• Right gonadal vessels
• Coils of small intestine
RELATIONS
OF INFERIOR
VENA CAVA
POSTERIOR:
•Bodies of lumbar
vertebrae
•Right crus
•Right renal
artery
•Right
sympathetic
trunk
RELATIONS OF INFERIOR
VENA CAVA
RIGHT:
• Right psoas major
• Right ureter
LEFT:
• Abdominal aorta
TRIBUTARIES OF INFERIOR
VENA CAVA
TRIBUTARIES OF INFERIOR
VENA CAVA
•
•
•
•
•
•
•
Right & left inferior phrenic veins
Right & left renal veins
Right & left lumbar veins
Right & left common iliac veins
Right suprarenal vein
Right gonadal vein
Hepatic veins
N.B.
Left suprarenal vein & left gonadal vein
drain into left renal vein
Median sacral vein drains into left
common iliac vein
Superior mesenteric vein joins splenic
vein to form portal vein
Inferior mesenteric vein drains into
splenic vein
There is no celiac vein
N.B.
Tributaries of IVC = paired branches of
abdominal aorta
- Left suprarenal & left gonadal veins
+ hepatic veins