posterior neck

• Suboccipital Muscles (4 muscles):

  1; Rectus capitis posterior minor - from c1 to skull

  2; Rectus capitis posterior major - from c2 to skull

  3; Obliquus capitis superior - from C1 transverse process to skull

  4; Obliquus capitis inferior - from C2 spinous process to C1 transverse process

  a - all 4 muscles; ipsilateral rotation, bilateral - extend head on neck

  ns - all 4 muscles - dorsal rami of c1
• Splenius cervicis:

  o - spinous process of t3-6

  r - upwards

  i - transverse process of c1-4

  a - bilateral neck extension, unilateral - ipsilateral lateral flexion & rotation

  ns - dorsal rami c5-7
• Splenius capitis:

  o - spinous processes (T4 - C7), lower half of ligamentum nuchae

  r - upwards

  i - mastoid process and lateral 1/3 superior nuchal line

  a - bilateral neck extension, unilateral - ipsilateral lateral flexion and rotation

  ns - dorsal rami c3-5