<prompt> Which joint is involved in side to side movement to look right and leftAtlanto-occipital jointAtlanto-axial jointC2-C3 aiculationC6-C7 aiculation  <response>: Side to side movement is due to the C1 - C2 joint called atlanto-axial joint. Atlas is C1 bone, Axis is C2 bone,the Dens of C2 is going to fit into the atlas bone forming ATLANTO-AXIAL JOINT Atlanto-occipital joint Ellipsoidal synol jointcauses yes movement nodding movement. Movement at Atlanto-occipital joint: 