All yang channels except for which one pass through ST-12?

The question pertains to the pathways of the yang channels and their anatomical relations, particularly regarding where they pass in relation to the point ST-12, also known as Que Pen.

The correct answer indicates that the UB channel, or Urinary Bladder channel, is the only yang channel that does not pass through ST-12. This is significant due to the anatomical pathways of the various yang channels in Traditional Chinese Medicine (TCM).

The other channels—LI (Large Intestine), SI (Small Intestine), and ST (Stomach)—all traverse the area of ST-12. Understanding the pathways helps practitioners identify points for needle insertion and the flow of qi within the body. The urinary bladder channel, however, takes a different route, illustrating the unique characteristics of each channel's journey through the body.

In summary, the focus on the urinary bladder channel's pathway reinforces the understanding of channel anatomy and its practical implications in TCM practice.