External Obliques - Muscle Physiology & Functional Anatomy

 

External Obliques Muscle

Anatomy

 

Origin:

  • External surfaces of ribs 5-12 (Lower 7 or 8 ribs) 


Insertion:

  • Anterior 2/3 of the iliac crest & the lateral 2/3 of the inguinal ligament



Major Artery:

 

Neural Innervation:

  • Lower 6 intercostal nerve

  • Subcostal nerve

 

Trigger Points:

Obliques Muscles Trigger Points

 

 

Physiology

 

Concentric Functions:

  • Flexion, rotation and lateral reflection of the (lumbar spine) torso

 

Eccentric Functions:

  • Decelerates extension & rotation of the (lumbar) spine

 

Isometric Function:

  • Dynamically stabilizes the lumbo-pelvic-hip complex

 

Related Muscles

 

Exercises:

 

 

 


More Images of the External Obliques Muscle

 

External Obliques


More Information about the External Obliques Muscle

The external obliques muscle is derived from 'obliquus externus abdominis' in Latin.  Both external and internal obliques work with the transverse abdominis to increase the intra-abdominal pressure which helps support the lumbar spine in some exercises.

 

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