Which term describes the action of the palms facing upwards?

The action of the palms facing upwards is described as supination. This term refers to the rotation of the forearm and wrist so that the palm is turned to face upward or forward. In anatomical terms, when the body is in the standard position, supination occurs as the radius and ulna (the two bones in the forearm) are parallel to each other and the palm faces anteriorly (toward the front).

Understanding supination is important in various contexts, such as in exercises that engage the biceps or during functional movements where an upward-facing palm position is utilized. Many movements in sports and daily activities are influenced by this specific hand position. For example, holding a bowl of soup or performing a bicep curl would involve supination of the forearms.

The other terms listed relate to different movements: pronation refers to the opposite action, where the palms face downwards; abduction involves moving a limb away from the midline of the body; and eversion pertains to the foot, describing the outward turning motion of the foot at the ankle. These distinctions underscore the specific nature of supination in terms of anatomical movement and functionality.