Posterior Abdominal Wall (1st Half)

Iliohypogastric nerve roots

T12-L1

Ilioinguinal nerve roots

L1

Genitofemoral nerve roots

L1-L2

Lateral femoral cutaneous nerve roots

L2-L3

Femoral nerve roots

L2-L4

Obturator nerve roots

L2-L4

Name the level and contents of the caval hiatus

T8, contains IVC, right phrenic nerve, lymphatics

Name the level and contents of the esophageal hiatus

T10, contains esophagus, anterior/posterior vagal trunks, esophageal branches of left gastric artery/vein, lymphatics

Name the level and contents of the aortic hiatus

T12, contains aorta, thoracic duct, azygos and hemiazygos veins

What structures pass through a few other small openings in the diaphragm?

Lymphatics, sympathetic trunks, splanchnic nerves

What does the median arcuate ligament arch over?

Aorta (forms aortic hiatus)

What do the medial arcuate ligaments arch over?

Right and left psoas major muscles

What do the lateral arcuate ligaments arch over?

Right and left quadratus lumborum muscles

Arterial supply of the superior surface of the diaphragm

Pericardicophrenic, musculophrenic arteries, and superior phrenic arteries

Arterial supply of the inferior surface of the diaphragm

Inferior phrenic arteries

Venous drainage from the superior surface of the diaphragm

Internal thoracic, azygos and hemiazygos veins, IVC

Venous drainage from the inferior surface of the diaphragm

IVC, suprarenal veins