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External Oblique
Region: Abdominal & Pelvic Muscles · All abdominal & pelvic muscles
External Oblique at a glance
| Origin | Outer surfaces of ribs 5–12 |
|---|---|
| Insertion | Linea alba, pubic tubercle and front half of the iliac crest |
| Actions | Rotates the trunk to the opposite side; Flexes and side-bends the trunk; Compresses the abdomen |
| Nerve supply | Lower intercostal nerves (T7–T12) |
◆ Good to know
Its free lower edge forms the inguinal ligament, and its aponeurosis forms the front wall of the inguinal canal — central to hernia anatomy.
More Abdominal & Pelvic Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.