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Rectus Capitis Posterior Major
- This muscle keeps your eyes at the horizon.
- Origin: SP of C2 (axis)
- Insertion: Inferior nuchal line of the occiput
- Action: Head extension
- Nonropy
- Deep to several including upper traps and splenius capitis
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Rectus Capitis Posterior Minor
- Origin: Tubercle of C1 (atlas), upper posterior arch
- Insertion: Inferior nuchal line of the occiput
- Action: Head extension
- Nonropy
- Deep to upper traps
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Oblique Capitis Superior
- Origin: TVP of C1
- Insertion: Between the lateral nuchal lines of the occiput (most lateral insertion)
- Action: Head extension; ipsilateral lateral flexion of the head
- Nonropy
- Deep to splenius capitis
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Oblique Capitis Inferior
- Origin: SP of C2
- Insertion: TVP of C1
- Action: Ipsilateral rotation of head
- Nonropy
- Deep to trap, semispinalis, and splenius capitis
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