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What does "internal rotation" refer to?

  1. Moving toward the midline of the body

  2. Turning the joint inward

  3. Turning the joint outward

  4. Touching an opposite finger with the thumb

The correct answer is: Moving toward the midline of the body

"Internal rotation" refers to the movement of a body part, typically a joint, toward the midline of the body. This term is commonly used in anatomy and physical therapy to describe the motion of turning a limb or joint inward towards the centerline of the body. Option A is the correct answer as it accurately describes the definition of internal rotation.