Internal Obliques - Muscle Physiology & Functional Anatomy


Internal Obliques Muscle




  • Lateral 2/3 of the inguinal ligament, anterior 2/3 of the iliac crest & the lumbodorsal fascia.


  • Linea alba, xiphoid process and the inferior (lower 2-4) ribs.

Major Artery:


Neural Innervation:

  • Anterior primary rami of T6-L2

  • Neural filaments from iliohypogastric & ilioinguinal nerves


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 & intersegmental spinal stabilization


Related Muscles





More Images of the Internal Obliques Muscle


Internal Oblique & Deep Musculature


More Information about the Internal Obliques Muscle

The internal obliques muscle is derived from obliquus internus abdominis' in Latin.  Both internal and external 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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