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Muscle Name: Semispinalis Thoracis

Medical Name:

• Semispinalis Thoracis

Other Names:

• None

Head:

• None (Single muscle)

Movement:

• Extension of the thoracic spine (bilateral contraction)
  • Straightening the upper back
• Lateral flexion of the thoracic spine (unilateral contraction)
  • Bending the upper back to the side
• Rotation of the thoracic spine (unilateral contraction)
  • Rotating the upper back to the opposite side

Attachment:

• Origin:
  • Transverse processes of T6-T12 vertebrae
• Insertion:
  • Spinous processes of C6-T4 vertebrae

Related Muscles:

• Multifidus
• Rotatores
• Erector Spinae
• Splenius Capitis
• Splenius Cervicis

EXERCISES

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