Final answer:
Rotational movement is the movement of a bone as it rotates around its longitudinal axis. Medial rotation is rotation toward the midline of the body, while lateral rotation is rotation away from the midline of the body.
Step-by-step explanation:
Rotational movement is the movement of a bone as it rotates around its longitudinal axis. For example, rotation of the head from side to side is an example of rotational movement. This type of movement can occur at various joints in the body, including the shoulder and hip joints. Medial rotation refers to rotation toward the midline of the body, while lateral rotation refers to rotation away from the midline of the body.