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Alternate names: BL-37

Channel: BL, foot greater yáng (tài yáng) bladder channel

Modern location: An acupoint located on the upper back, level with the inferior border of the spinous process of the third thoracic vertebra, 3 cùn lateral to the midline.

Classical location: Below Attached Branch (BL-41), three cùn either side of the spine, below the third vertebra. The point is found in straight sitting posture. From The Great Compendium of Acupuncture and Moxibustion (针灸大成 zhēn jiǔ dà chéng)

Local anatomy: The posterior branch of the intercostal artery, the descending branch of the transverse cervical artery. Medial cutaneous branches of the posterior rami of the 2rd and 3rd thoracic nerve; deeper, their lateral branches and the dorsal scapular nerve.

Action: Diffuses lung qì; calms panting and suppresses cough.

Modern indications: Cough; panting; stiff nape; pulmonary consumption (pulsmonary tubercolosis, TB); forgetfulness; seminal emission; nontransformation of grain (undigested food in the stool); pain in the shoulder and back.

Classical indications: retching and vomiting with vexation and fullness; vacuity taxation; lung wilting; steaming bone tidal heat effusion.

Needle stimulus: Needling: 0.3‒0.5 cùn downward oblique insertion. Moxa: 3‒7 cones; pole 20‒30 min.

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