Final answer:
Internal rotation is not a movement of the spine; the spine's movements include lateral flexion, axial rotation, and extension.
Step-by-step explanation:
The movement that is not considered a movement of the spine is internal rotation. The movements associated with the spine include lateral flexion, which is the bending of the neck or body toward the right or left side, axial rotation, which is the turning of the head side to side or twisting of the body, and extension, which is a posterior-directed motion, such as straightening from a flexed position or bending backward. Internal rotation typically refers to the turning of the anterior surface of a limb toward the midline of the body, which is more relevant to limb movements at the shoulder or hip joints.