Which BL point lies at the level of the lower border of the spinous process of the sixth thoracic vertebra (T6)?

• A. BL 42
• B. BL 44
• C. BL 45
• D. BL 43

Answer: (C)

Think of the Bladder back-shu points as a vertical sequence along the thoracic spine, each located about 1.5 cun lateral to the posterior midline at a specific vertebral level. The level you’re looking for is the lower border of the spinous process of T6, and the Bladder point that sits there is BL 45. To locate it, find the spinous process of T6, move to its lower border, then go 1.5 cun lateral to the midline along the Bladder channel. This is the point at that level. The points higher up the spine would be found at the levels above (e.g., BL 44 at the level of the spinous process higher than T6).