Posterior abdominal wall and diaphrag,

Abdominal Aorta

Extents

From: Lower border of body of T12
To: Lower part of the body of L4 in the intercristal plane

Relations: Sorrounded by aortic plexus
Anterior	Posterior	Laterally
Coeliac plexus Body of pancreas Splenic vein Left renal vein Unicinate process of the pancreas Horizontal part of duodenum Right side Inferior vena cava below Crus of the diaphragm above level of renal vein	Bodies of L1 and L2 Cisterna chylii Azygous vein	Lumbar lymph nodes

Branches: Unpaired and Paired

Unpaired	Distribution
Coeliac trunk	Visceral- fore gut derivatives
Superior mesenteric	Visceral – mid gut derivatives
Inferior mesenteric	Visceral – hind gut derivatives
Median sacral	Visceral – rectum Parietal – sacrum

Paired	Distribution

Inferior Phrenic	Visceral- supra renal and esophagus Pariteal- thoracic diaphragm
4 lumbar	Parietal- posterior abdominal wall
Middle supra renal	Visceral – supra renal gland
Renal	Visceral- kidneys and supra renal
Gonadal	Visceral – testis and ovary
Common iliac	Visceral – pelvic viscera Parietal – pelvic walls

Posterior abdominal wall and diaphragm