anatomy exp

Iliopsoas
- Origin:
- - Psoas Major
  - Transverse processes of T12-L5 & the lateral aspects of the intervertebral discs
  - Psoas Minor
  - Side of T12+L1 & IV intervertebral disc between
  - Iliacus
  - Iliac fossa, base of sacrum
- Insertion:
- - Psoas Major
  - Lesser trochanter of the femur
  - Psoas Minor
  - Pectineal line & iliopectineal eminence (lesser trochanter of the femur)
  - Iliacus
  - Lesser trochanter of the femur (lowermost surface)
- Major Arteries:
- - Psoas Major
  - Lumbar branch of iliolumbar artery
  - Psoas Minor
  - Iliacus
  - Medial femoral circumflex artery
    Iliac branch of iliolumbar artery
- Neural Innervation:
- - Psoas Major
  - Lumbar plexus via anterior branches of L1-L3 nerves
  - Psoas Minor
  - Lumbar plexus
  - Iliacus
  - Femoral nerve (L2-L3)
    Concentric Functions:
    Hip flexion & external rotation
    
    Eccentric Functions:
    Decelerates hip extension
    Decelerates femoral internal rotation at heel strike
    
    Isometric Function:
    Assists in stabilizing the lumbar spine during functional movements
    
    Related Muscles
    Rectus Femoris
    Pectinius
    Sartorius
    Tensor Fasciae Latae
    Antagonists:
    Gluteus Maximus
Iliopsoas

Anatomy

Author

Anonymous

ID

106629

Card Set

anatomy exp

Description

exper

Updated

2011-10-05T17:29:25Z

Show Answers