What anatomical feature does GB-36 serve as?

GB-36, known as Waiqiu, is classified as a Xi Cleft point. Xi Cleft points are locations on the meridians where qi and blood are said to gather. They are particularly significant for treating acute conditions and pain, as they are thought to contain a concentrated energy that can help address issues related to their associated meridian.

In the case of GB-36, its placement along the Gallbladder channel indicates its role in managing conditions related to the gallbladder and associated symptoms. These points are typically found along the pathway of a meridian, specifically between the elbow and the wrist in this instance, and they can be very effective in alleviating pain and addressing any stagnation or blockages.

While the other anatomical features mentioned in the choices, such as Front Mu points, Meeting points, and He Sea points, denote different types of acupuncture points with distinct functions and locations on the meridian system, GB-36's function as a Xi Cleft point specifically supports the management and treatment of acute conditions along the gallbladder meridian.