Longissimus capitis

• O (origin):

  • Transverse processes of T1 – T5
  • Articular processes of C4 – C7

  A) longissimus capitis

  
• R (direction):

  • Up and out

  A) longissimus capitis

  
• I (insertions):

  • posterior aspect of mastoid process

  A) longissimus capitis

  
• A (actions):

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

  A) longissimus capitis

  
• NS (nerve supply):

  • Adjacent posterior primary rami

  A) longissimus capitis