On the lateral side of the upper arm, 3 cun proximal to LI-11, on the line connecting LI-11 with LI-15.

• A. LI-11
• B. LI-14
• C. LI-13
• D. LI-12

Answer: (C)

This question tests knowing the order and spacing of the LI channel points on the lateral upper arm as you move from the elbow toward the shoulder. Along the line from LI-11 (elbow) to LI-15 (shoulder), the LI points lie in sequence on the upper arm: LI-12, LI-13, LI-14. If a point is described as 3 cun proximal to LI-11 on that line, it corresponds to LI-13. So the described location matches LI-13. LI-12 is closer to LI-11, and LI-14 sits farther toward LI-15.