Obliquus Capitis Inferior
Neck
The only suboccipital muscle that doesn't attach to the skull — it stays between C1 and C2.
Function
Rotates atlas on axis — turns head ipsilaterally
Origin
Spinous process of axis (C2)
Insertion
Transverse process of atlas (C1)
Innervation
Suboccipital nerve (dorsal ramus C1)