Table 3:

Average CSAs of the suboccipital musculature

MuscleMean CSA (cm2)SD
Rectus capitis posterior minor2.361.20
Rectus capitis posterior major5.121.76
Longus colli/capitis1.190.45
Inferior oblique capitis3.730.54
Semispinalis cervicis/multifidus1.480.45
Semispinalis capitis4.040.61
Splenius capitis4.980.82
Total muscle CSA19.706.80
  • Note:—CSA indicates cross-sectional area.