Suboccipital Group

Joe Muscolino

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RCPMin = Rectus Capitis Posterior Minor

RCPMaj = Rectus Capitis Posterior Major

OCS = Obliquus Capitis Superior

OCI = Obliquus Capitis Inferior

 

ATTACHMENTS:

  • The rectus capitis posterior major attaches from the spinous process of C2 to the inferior nuchal line of the occiput.
  • The rectus capitis posterior minor attaches from the posterior tubercle of C1 to the inferior nuchal line of the occiput.
  • The obliquus capitis inferior attaches from the spinous process of C2 to the transverse process of C1.
  • The obliquus capitis superior attaches from the transverse process of C1 to the occiput, between the inferior and superior nuchal lines.

 

ACTIONS:

  • The rectus capitis posterior major extends the head at the atlanto-occipital joint.
  • The rectus capitis posterior minor and obliquus capitis superior protract the head at the atlanto-occipital joint.
  • The obliquus capitis inferior ipsilaterally rotates the atlas at the atlanto-occipital joint.