Motor skills are activities or tasks that require voluntary control over movements of the joints and body segments to achieve a specific goal. They are characterized by having a goal to achieve, being performed voluntarily, and requiring movement of joints and body segments. Motor skills need to be learned or relearned in order for a person to achieve the goal of the skill. A motor is something that produces or refers to motion, such as a nerve cell that conveys an impulse to a muscle to cause contraction and movement.