Musculus psoas major

The video tutorial provides an in-depth look at the psoas major muscle, part of the iliopsoas muscle group. It covers the muscle's composition, origin, and attachment points, highlighting its unique origin from the axial skeleton. The tutorial also discusses the nerve associations, particularly the lumbar plexus and femoral nerve, and the clinical relevance of these connections. The functions of the iliopsoas muscle, including hip flexion, posture support, and movement stabilization, are explained, along with its role in lateral and ventral flexion and external thigh rotation.

What are the two muscles that make up the iliopsoas muscle?

From which part of the body does the psoas major muscle originate?

What is the primary function of the iliopsoas muscle?

How does the psoas major muscle contribute to body posture?

What happens to the lumbar spine when the psoas major muscle contracts on one side?