The forearm bone on the thumb side is called which?

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Multiple Choice

The forearm bone on the thumb side is called which?

Explanation:
The bone on the thumb side of the forearm is the radius. In the standard anatomical position, the forearm is facing forward with the palms up, so the radius sits on the lateral (thumb) side and the ulna on the medial (little finger) side. The radius and ulna are connected and can rotate around each other when you turn your hand (pronation and supination). The other two options aren’t forearm bones: carpals are the wrist bones, and metacarpals are the bones of the palm. So the thumb-side forearm bone is the radius.

The bone on the thumb side of the forearm is the radius. In the standard anatomical position, the forearm is facing forward with the palms up, so the radius sits on the lateral (thumb) side and the ulna on the medial (little finger) side. The radius and ulna are connected and can rotate around each other when you turn your hand (pronation and supination). The other two options aren’t forearm bones: carpals are the wrist bones, and metacarpals are the bones of the palm. So the thumb-side forearm bone is the radius.

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