[Location] Localized in the prone position or in the erect sitting position with the elbows resting on a table, on the nuchal region, 0.5 cun from the median line. ( Fig. 89 )
 
[Regional Anatomy] Skin→subcutaneous tissue→trapezius muscle→musculus serratus posterior superior→musculus splenius cervicis of head→semispinal muscle of head→muhifidus muscle. Superficial layer, the distribution of cutaneous branches of the fourth and the fifth rami posteriores nervorum cervicalium; deep layer, the distribution of branches of the forth and the fifth rami posteriores nervorum cervicalium.