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Transversus Abdominis
Region: Abdominal & Pelvic Muscles · All abdominal & pelvic muscles
Transversus Abdominis at a glance
| Origin | Costal cartilages 7–12, thoracolumbar fascia, iliac crest and inguinal ligament |
|---|---|
| Insertion | Linea alba and pubic crest (conjoint tendon) |
| Actions | Compresses and supports the abdomen (the body's natural corset); Stabilises the trunk |
| Nerve supply | Lower intercostal nerves and iliohypogastric/ilioinguinal nerves (L1) |
◆ Good to know
The deepest flat abdominal muscle and a core stabiliser; it contracts just before limb movements to brace the spine.
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.