Splenius cervicis

• O (origin):

  • Spinous processes of T3 - T6

  A) Splenius cervicis

  
• R (direction):

  • Upwards

  A) Splenius cervicis

  
• I (insertions):

  • Transverse processes of C1 - C4

  A) Splenius cervicis

  
• A (actions):

  • Bilateral action: neck extension
  • Unilateral action: ipsilateral lateral flexion and rotation

  A) Splenius cervicis

  
• NS (nerve supply):

  • Dorsal rami C5 - C7

  A) Splenius cervicis