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Human Anatomy: Muscle Groups


Human Anatomy



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Muscle Function & Other Pertinent Medical Information
- EXTERNAL ABDOMINAL OBLIQUE -
ORIGIN: Anterior angles of lower eight ribs
INSERTION: Outer anterior half of iliac crest, inguinal lig, public tubercle and crest, and aponeurosis of anterior rectus sheath
ACTION: Supports abdominal wall, assists forced expiration, assists raising intraabdominal pressure and, with muscles of opposite side, abducts and rotates trunk
NERVE: Anterior primary rami (T7-12)






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