Extension of the Vertebral Column: Synergist & Antagonist Muscles
Extension of the Vertebral Column: Antagonist Muscle
External oblique (bilaterally)
Extension of the Vertebral Column: Antagonist Muscle
Iliacus (with the insertion fixed)
Extension of the Vertebral Column: Synergist Muscle
Iliocostalis (bilaterally)
Extension of the Vertebral Column: Antagonist Muscle
Internal oblique (bilaterally)
Extension of the Vertebral Column: Synergist Muscle
Interspinalis
Extension of the Vertebral Column: Synergist Muscle
Intertransversarii (bilaterally)
Extension of the Vertebral Column: Synergist Muscle
Latissimus dorsi (assists when arm is fixed)
Extension of the Vertebral Column: Synergist Muscle
Longissimus (bilaterally)
Extension of the Vertebral Column: Synergist Muscle
Multifidi (bilaterally)
Extension of the Vertebral Column: Antagonist Muscle
Psoas Major (with the insertion fixed)
Extension of the Vertebral Column: Synergist Muscle
Quadratus lumborum (assists)
Extension of the Vertebral Column: Antagonist Muscle
Rectus abdominis
Extension of the Vertebral Column: Synergist Muscle
Rotatores (bilaterally)
Extension of the Vertebral Column: Synergist Muscle
Semispinalis Capitis
Extension of the Vertebral Column: Synergist Muscle
Spinalis (bilaterally)
