dr. ahmed fathalla ibrahim. abdominal aorta beginning: (opposite t12) a continuation of descending...
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Dr. Ahmed Fathalla Ibrahim
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ABDOMINAL AORTAABDOMINAL AORTA
BEGINNING:BEGINNING: A continuation of descending thoracic
aorta after passing through aortic opening of diaphragm (opposite T12)(opposite T12)
TERMINATION:TERMINATION: Divides into 2 common iliac arteries
(opposite lower part of L4)(opposite lower part of L4)
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ANTERIOR RELATIONS OF ANTERIOR RELATIONS OF ABDOMINAL AORTAABDOMINAL AORTA
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ANTERIOR RELATIONS OF ANTERIOR RELATIONS OF ABDOMINAL AORTAABDOMINAL AORTA
2 pancreas, 2 intestine, 2 veins, 2 2 pancreas, 2 intestine, 2 veins, 2 superior mesentericsuperior mesenteric
Body & uncinate process of pancreas
Splenic & left renal veins Third part of duodenum Coils of small intestine Superior mesenteric vessels
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RELATIONS OF RELATIONS OF ABDOMINAL ABDOMINAL
AORTAAORTA
POSTERIOR:POSTERIOR: Bodies of Bodies of lumbar vertebraelumbar vertebrae
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RELATIONS OF RELATIONS OF ABDOMINAL ABDOMINAL
AORTAAORTARIGHT:RIGHT:IVCIVCCysterna chyliCysterna chyliAzygos veinAzygos veinRight crusRight crus
LEFT:LEFT:Left sympathetic Left sympathetic trunktrunkLeft psoas majorLeft psoas majorLeft crusLeft crus
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BRANCHES OF ABDOMINAL BRANCHES OF ABDOMINAL AORTAAORTA
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SINGLE BRANCHES OF SINGLE BRANCHES OF ABDOMINAL AORTAABDOMINAL AORTA
Three arising from anterior aspect of Three arising from anterior aspect of aorta:aorta:
1)Celiac trunk (upper part of L1)(upper part of L1)
2)Superior mesenteric (lower part of L1)(lower part of L1)
3)Inferior mesenteric (L3)(L3)One arising from termination of aorta:One arising from termination of aorta:
1)Median sacral (lower part of L4)(lower part of L4)
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PAIRED BRANCHES OF PAIRED BRANCHES OF ABDOMINAL AORTAABDOMINAL AORTA
Three pairs arising from anterior Three pairs arising from anterior aspect of aorta:aspect of aorta:
1)Inferior phrenic (upper part of L1)(upper part of L1)
2)Suprarenal (lower part of L1)(lower part of L1)
3)Gonadal (testicular or ovarian) (L3)(L3)One pair arising from lateral aspect of One pair arising from lateral aspect of
aorta:aorta:
1)Renal (L2)(L2)
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PAIRED BRANCHES OF PAIRED BRANCHES OF ABDOMINAL AORTAABDOMINAL AORTA
Four pairs arising from posterior Four pairs arising from posterior aspect of aorta:aspect of aorta:
1)LumbarOne pair arising from termination of One pair arising from termination of
aorta:aorta:
1)Common iliac (Lower part of L4)(Lower part of L4)
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COMMON ILIAC ARTERIESCOMMON ILIAC ARTERIESBEGINNING:BEGINNING:
• Terminal branches of abdominal aorta (lower part of L4)(lower part of L4)
TERMINATION:TERMINATION:
• Each one bifurcates into external & bifurcates into external & internal iliac arteries (lower part of L5) internal iliac arteries (lower part of L5)
COURSE & RELATIONS:COURSE & RELATIONS:
• Descend along medial border of psoas medial border of psoas
• End anterior to sacroiliac jointanterior to sacroiliac joint
• The bifurcation is crossed by uretercrossed by ureter
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EXTERNAL ILIAC ARTERYEXTERNAL ILIAC ARTERY
BEGINNING:BEGINNING:
• One of 2 terminal branches of common iliac artery (lower part of L5)(lower part of L5)
TERMINATION:TERMINATION:
• Continues as femoral artery, behind inguinal ligament
BRANCHES:BRANCHES:
1)Deep circumflex iliac
2)Inferior epigastric
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INFERIOR VENA CAVAINFERIOR VENA CAVA
BEGINNING:BEGINNING:
• Formed by union of 2 common iliac veins (L5)(L5)
TERMINATIONTERMINATION:
• Pierces central tendon of diaphragm at level of T8T8
• Opens in the right atrium at level of right 6right 6thth costal cartilage costal cartilage
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RELATIONS OF INFERIOR RELATIONS OF INFERIOR VENA CAVAVENA CAVA
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RELATIONS OF INFERIOR RELATIONS OF INFERIOR VENA CAVAVENA CAVA
ANTERIOR: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
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RELATIONS RELATIONS OF INFERIOR OF INFERIOR VENA CAVAVENA CAVA
POSTERIOR:POSTERIOR:•Bodies of lumbar Bodies of lumbar vertebraevertebrae•Right crusRight crus•Right renal Right renal arteryartery•Right Right sympathetic sympathetic trunktrunk
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RELATIONS OF INFERIOR RELATIONS OF INFERIOR VENA CAVAVENA CAVA
RIGHT:RIGHT:
• Right psoas major
• Right ureterLEFT:LEFT:
• Abdominal aorta
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TRIBUTARIES OF INFERIOR TRIBUTARIES OF INFERIOR VENA CAVAVENA CAVA
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TRIBUTARIES OF INFERIOR TRIBUTARIES OF INFERIOR VENA CAVAVENA CAVA
• Right & left Right & left inferior phrenic veins
• Right & left Right & left renal veins
• Right & left Right & left lumbar veins
• Right & left Right & left common iliac veins
• RightRight suprarenal vein
• RightRight gonadal vein
• Hepatic veins
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N.B.N.B.
Left suprarenal vein & left gonadal vein Left suprarenal vein & left gonadal vein drain into left renal veindrain into left renal vein
Median sacral vein drains into left Median sacral vein drains into left common iliac veincommon iliac vein
Superior mesenteric vein joins splenic Superior mesenteric vein joins splenic vein to form portal veinvein to form portal vein
Inferior mesenteric vein drains into Inferior mesenteric vein drains into splenic veinsplenic vein
There is no celiac veinThere is no celiac vein
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N.B.N.B.
Tributaries of IVC = paired branches of Tributaries of IVC = paired branches of abdominal aortaabdominal aorta
- Left suprarenal & left gonadal veinsLeft suprarenal & left gonadal veins
+ hepatic veins+ hepatic veins