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| - TRANSVERSUS ABDOMINIS - |
| ORIGIN: | Costal margin, lumbar fascia, anterior two thirds of iliac crest and lateral half of inguinal ligament |
| INSERTION: | Aponeurosis of posterior and anterior rectus sheath and conjoint tendon to pubic crest and pectineal line |
| ACTION: | Supports abdominal wall, assists forced expiration and raising intra-abdominal pressure. Conjoint tendon supports posterior wall of inguinal canal |
| NERVE: | Anterior primary rami (T7-12). Conjoint tendon ilioinguinal nerve (L1) |
