Which BL point is on the buttock, in the depression 3 cun lateral to the sacro-coccygeal hiatus?

• A. Bl 54
• B. Bl 50
• C. Bl 52
• D. Bl 53

Answer: (A)

The question tests precise localization of Bladder channel points using surface landmarks and a cun measurement. The described spot—on the buttock, in the hollow formed by the gluteus maximus, 3 cun lateral to the sacro-coccygeal hiatus—corresponds to Bladder point on the buttock. This point sits at that exact depression and offset, making it the best match for the described location. The sacro-coccygeal hiatus is a clear landmark at the base of the spine, and moving 3 cun laterally from there places you in the buttock region along the Bladder channel. The other points are located in different regions and do not fit this precise landmark, so they aren’t described by this location.