Muscles of the Trunk

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  • Muscles of the Trunk
    • Internal Intercostals
      • Depress the rib cage and contract during forced expiration
    • External Intercostals
      • Elevate the ribs during inspiration
    • Diaphragm
      • Contracts to allow inhalation, relaxes to allow exhalation
    • Internal and External Obliques
      • Compress abdominal cavity, protect and support abdomen and allow rotation of trunk
        • Transverse Abdominis
        • Rectus Abdominis
          • Assists with flexing and rotating the lumbar spine
            • Compress abdominal cavity, protect and support abdomen and allow rotation of trunk
              • Transverse Abdominis
              • Rectus Abdominis
                • Assists with flexing and rotating the lumbar spine

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