Q: The atlas is the topmost vertebra and with the axis forms the joint connecting the skull and spine. The atlas and axis are specialized to allow a greater range of motion than normal vertebrae. They are responsible for the nodding and rotation movements of the head.\n\nAnswer this question based on the passage: what bone allows the head to nod yes? Let's give stream of consciousness first:
User
The relevant information is: They are responsible for the nodding and rotation movements of the head. Therefore, the final answer is atlas and axis.
Assistant