Which BL point is 1.5 cun lateral to the lower border of the spinous process of the second thoracic vertebra (T2)?

Which BL point is 1.5 cun lateral to the lower border of the spinous process of the second thoracic vertebra (T2)?

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

Answer: (D)

The key idea is how the Bladder meridian’s back-shu points align with the thoracic vertebrae. Each back-shu point sits 1.5 cun lateral to the spine at the level of a specific vertebra. The location described—1.5 cun lateral to the lower border of the spinous process of the second thoracic vertebra—matches the back-shu point at T2, which is Fengmen and corresponds to the Lung. The other options are placed at neighboring levels (T1, T3, T4) and do not align with the T2 description. So this position identifies the Lung back-shu point.

The key idea is how the Bladder meridian’s back-shu points align with the thoracic vertebrae. Each back-shu point sits 1.5 cun lateral to the spine at the level of a specific vertebra. The location described—1.5 cun lateral to the lower border of the spinous process of the second thoracic vertebra—matches the back-shu point at T2, which is Fengmen and corresponds to the Lung. The other options are placed at neighboring levels (T1, T3, T4) and do not align with the T2 description. So this position identifies the Lung back-shu point.