Which BL point lies along the sacral region at the level of the fourth posterior sacral foramen?

• A. BL 34
• B. BL 31
• C. BL 33
• D. BL 32

Answer: (A)

Points on the Bladder meridian in the sacral region align with the posterior sacral foramina. BL 31 through BL 34 are located 0.5 cun lateral to the midline at the level of each corresponding posterior sacral foramen: BL 31 at the first foramen (S1), BL 32 at the second (S2), BL 33 at the third (S3), and BL 34 at the fourth (S4). So the point at the level of the fourth posterior sacral foramen is BL 34.