Right to left movement occurs at:
Ans. a. Atlanto-axialTo look right or left ('NO' movements of head) occurs at the Atlanto-axial Joint.'YES' movements occur at the Atlanto-occipital Joint and involve flexion and extension of head over vertebra.C2-C3 and C3-C4 joints allow mainly flexion and extension of the neck and small degree of rotation is also possible.
Atlanto-axial
Atlanto-occipital
C2 -C3
C3 -C4
Embryology