Which BL point is 3 cun lateral to the midline, at the level of the spinous process of the second sacral vertebra?

Which BL point is 3 cun lateral to the midline, at the level of the spinous process of the second sacral vertebra?

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

Answer: (A)

The location being tested uses a fixed back-reference: the bladder meridian points along the back are described as 3 cun lateral to the midline at specific vertebral levels. The point at the level of the spinous process of the second sacral vertebra, 3 cun to the side, corresponds to BL-53. That exact vertebral level and offset match the description in the question, which is why this point is the correct one. To locate it on a person, identify S2 by feeling the posterior spine, then measure 3 cun laterally from the midline to find the point. The other points are positioned at different levels, so they don’t fit the specified location.

The location being tested uses a fixed back-reference: the bladder meridian points along the back are described as 3 cun lateral to the midline at specific vertebral levels. The point at the level of the spinous process of the second sacral vertebra, 3 cun to the side, corresponds to BL-53. That exact vertebral level and offset match the description in the question, which is why this point is the correct one. To locate it on a person, identify S2 by feeling the posterior spine, then measure 3 cun laterally from the midline to find the point. The other points are positioned at different levels, so they don’t fit the specified location.