External Obliques - Muscle Physiology & Functional Anatomy


External Obliques Muscle




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


  • 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





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






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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