Muscles of the Posterior Abdominal Wall

About this video
This tutorial was creating using the Zygote Body web application. If you are having trouble viewing this, try the YouTube link


In this tutorial/podcast on the posterior abdominal wall, the following structures are discussed:


  • psoas major
  • psoas minor
  • iliacus
  • quadratus lumborum
  • diapraghm
  • iliopsoas

Bony Bits

  • vertebral body
  • transverse process of vertebrae
  • lesser trochanter of femur
  • pectineal line
  • iliopubic eminence
  • iliac fossa

Other structures

  • iliolumbar ligament
  • crura
  • inguinal ligament

Now for a couple of questions…

1. Where does the psoas major originate?

2. What is the function of the quadratus lumborum?

3. What nerve supplies the iliacus?

4. Where does the psoas minor insert?

5. Does the iliopsoas muscle pass above or underneath the inguinal ligament to insert onto the femur?

  • Alik

    Excellent work. Great job.

    • anatomyzone

      thank you!