Which term describes the rotational movement of turning the palms of the hands up or anteriorly?

The term that describes the rotational movement of turning the palms of the hands up or anteriorly is supination. This movement involves rotating the forearm so that the palms face forward or upward, which is the anatomical position of the hands. Supination is commonly associated with movements such as turning your palms upward when showing your hands or holding a bowl of soup.

In contrast, pronation refers to the inward rotation of the forearm, resulting in the palms facing downwards. Flexion and extension are terms that pertain to bending and straightening movements, typically around a joint—flexion decreases the angle between body parts, while extension increases it. Therefore, the correct identification of supination helps in understanding the specific movements of the forearms and wrists during various exercises or activities.