The turning of the palm so that the underside faces downward.

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Multiple Choice

The turning of the palm so that the underside faces downward.

Explanation:
In forearm rotation, pronation is turning the palm so the underside faces downward. This motion happens as the radius rotates over the ulna at the radioulnar joints, causing the palm to orient downward from the neutral anatomical position. Supination is the opposite, turning the palm upward. The other options aren’t about motion: a bone name (radius) and a sensory symptom (paresthesia) don’t describe the action of rotating the forearm.

In forearm rotation, pronation is turning the palm so the underside faces downward. This motion happens as the radius rotates over the ulna at the radioulnar joints, causing the palm to orient downward from the neutral anatomical position. Supination is the opposite, turning the palm upward. The other options aren’t about motion: a bone name (radius) and a sensory symptom (paresthesia) don’t describe the action of rotating the forearm.

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