Posterior Abdominal Wall and Diaphragm

Muscles forming posterior abdominal wall

1. Iliacus muscle
2. Psoas major muscle
3. Quadratus lumborum muscle
4. Posterior post of transversus abdominus muscle
5. Crura of diaphragm

Major Openings of Diaphragm:

Inferior Vena Cava (IVC) opening

Level: T8

In: central tendon, to the right of median plane

It Transmits:

1. IVC
2. Right phrenic nerve
3. Lymph vessels