<prompt> The joint that permits nodding of head while saying yes is?Atlanto-axial jointAtlanto-occipital jointC2- C3 jointC3- C4 joint  <response>: Atlanto-occipital joint is a synol between skull and C1 veebrae. It permits nodding of head such as flexison and extension YES movement and lateral flexion. Atlanto-axial joint is a pivot joint between C1 and C 2 veebrae. It permits rotation of head that is side to side movement NO movement. 