Which GV point is located at the vertex on the midline, described as 8 cun posterior to the glabella and 6 cun superior to the external occipital protuberance?

• A. GV 18
• B. GV 21
• C. GV 19
• D. GV 20

Answer: (D)

The vertex on the head is defined by a precise midline location using the glabella in front and the external occipital protuberance at the back. Baihui, the GV point at the vertex, is described as 8 cun posterior to the glabella and 6 cun superior to the inion, placing it right at the top of the head along the midline. This is why it matches the description given. It’s a major point on the Governing Vessel—the meeting place for yang channels and a key point for raising yang, clearing windy heat, and affecting mental function. The other points listed do not sit at the vertex on the midline, so they don’t fit the described location.