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OpenStax layered abdominal wall illustration identifying the external oblique muscle
OpenStax Anatomy and Physiology, Wikimedia Commons, CC BY 4.0 Image source

Abdomen

External oblique

Compresses the abdomen. flexes and laterally flexes the trunk. rotates the trunk to the opposite side

Origin
External surfaces of ribs five through twelve
Insertion
Linea alba, pubic tubercle, and anterior iliac crest
Primary actions
Compresses the abdomen. flexes and laterally flexes the trunk. rotates the trunk to the opposite side

Anatomy source

OpenStax Anatomy and Physiology 2e — Axial Muscles of the Abdominal Wall and Thorax

Open reference

Educational anatomy reference only. This page does not diagnose pain, injury, or movement limitations.

From anatomy to action

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A single muscle rarely explains a movement by itself. Use the related movement content to see how this anatomy may contribute, then choose a focused program when you want a complete progression.

Movement guides and exercises

Complete guided progressions

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