Lower Trapezius

• O (origin)

  • Extensive medial attachment from the base of the medial 1/3 of the superior nuchal line and the occipital bone
  • Ligamentum nuchae
  • Spinous processes of C7 to T12 and the intervening supraspinous ligament

  A) Lower Trapezius

  
• R (direction)

  • Upwards and laterally

  A) Lower Trapezius

  
• I (insertions)

  • Converge to form a tendon that attaches to inferior surface of medial end of the spine of the scapula

  A) Lower Trapezius

  
• A (actions)

  • Depression of scapula
  • retraction of scapula
  • lateral rotation of scapula

  A) Lower Trapezius

  
• NS (nerve supply)

  • Motor: Spinal part of cranial nerve 11 (‘Accessory’ nerve)
  • Sensory: Ventral rami C3, C4

  A) Lower Trapezius