Spinalis capitis

• R (direction):

  • Upwards

  A) spinalis capitis

  
• I (insertions):

  • poorly developed and frequently blend with other muscles
  • (Spinalis Thoracis T1 – T6)

  A) spinalis capitis

  
• A (actions):

  • Unilateral action: ipsilateral side flexion/rotation
  • Bilateral action: trunk extension

  A) spinalis capitis

  
• NS (nerve supply):

  • Adjacent posterior primary rami

  A) spinalis capitis

  
• O (origin):

  • General: spinous process to spinous process (Spinalis Thoracis T11 – T12)
  • poorly developed and frequently blend with other muscles

  A) spinalis capitis