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Category - Exercise Selection

Which of the following is the BEST definition of the frontal plane of movement?
  1. A plane that divides the body into a left side and a right side
  2. A plane that splits the body into a front and a back
  3. A plane that delineates proximal from distal ends of a limb
  4. A plane that divides the body into a top and bottom
Explanation
Answer: B - The frontal plane of movement is a plane that splits the body into a front and a back. All abduction and adduction occur on the frontal plane. Flexion and extension occur in the sagittal plane, while rotation occurs in the transverse plane. There is no specific plane of movement that divides proximal from distal ends of a limb.
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