Internal Obliques - Muscle Physiology & Functional Anatomy

 

Internal Obliques Muscle

Anatomy

 

Origin:

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

Insertion:

  • 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

 

 

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 & intersegmental spinal stabilization

 

Related Muscles

 

Exercises:

 

 


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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