Alternate phrasing: Which movement turns the palm upward?

Alternate phrasing: Which movement turns the palm upward?

• A. Supination
• B. Pronation
• C. Flexion
• D. Extension

Answer: (A)

Turning the palm upward is called supination. It’s a rotation of the forearm where the radius and ulna are parallel, so the palm faces forward or upward in the typical position (like holding a bowl). Pronation is the opposite, turning the palm downward as the radius crosses over the ulna. Flexion and extension describe bending and straightening at a joint, not palm orientation, so they don’t describe turning the palm up.

Turning the palm upward is called supination. It’s a rotation of the forearm where the radius and ulna are parallel, so the palm faces forward or upward in the typical position (like holding a bowl). Pronation is the opposite, turning the palm downward as the radius crosses over the ulna. Flexion and extension describe bending and straightening at a joint, not palm orientation, so they don’t describe turning the palm up.