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Abdominal Internal Oblique muscle

In this article, we will discuss about the Abdominal Internal Oblique muscle. So, let’s get started.

Abdominal Internal Oblique muscle

It originates from the thoracolumbar fascia, anterior 2/3rd of the iliac crest, and lateral half of the inguinal ligament and gets inserted into the linea alba, pectineal line of the pubis and lower ribs (8-12th). It is innervated by the thoracolumbar nerve (T7-L1) and artery supply is through the subcoastal arteries. Its chief action is the ipsilateral rotation and side-bending of the trunk, it also acts as an accessory muscle that helps in respiration (helps in reducing the volume of the chest cavity during exhalation).

Image Courtesy:- http://www.musclesused.com

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