Nodding Your Head Yes to Answer a Question Occurs at the [Dropdown

Short Answer

Nodding your head yes to answer a question occurs at the [dropdown 1] joint.Shaking your head no to answer a question occurs at the [dropdown 2].Both movements are occurring at a functionally classified [dropdown 3] joint.
Dropdown 1 & 2 choices:
atlanto-occipital
atlanto-axial
vertebrocostalsutural
sternocostal
Dropdown 3 choices:
amphiarthrosis
diarthrosis
synarthrosis