Anatomy Clinical testing of the function of the long thoracic nerve is done by: A Adduct the arm abducted to 90 degree against resistance B Hold the arm in abducted position against resistance C Initiate abduction of the arm from the side against resistance D Raise the arm above the head on the affected side 💡 Explanation Clinical testing of the function of the long thoracic nerve is done by: ✓ Correct Answer: D. Raise the arm above the head on the affected side