Course of the Channels and Point Qualifications
### Gallbladder-Channel (Foot-Shaoyang)
Course: The surface pathway of the Gallbladder Channel starts at the outer canthus of the eye at GB 01, runs to the ear and continues from there in a triple zigzag line over the side of the head to GB 20, at the posterior aspect of the occipital bone. From GB 20 it traverses the shoulder, along the anterior aspect of the trapezius muscle to GB 21. From GB 21, a branch traverses the shoulder to intersect with GV 14. This branch passes SI 12 and traverses across the shoulder to ST 12 in the supraclavicular fossa. A branch from ST 12 descends, enters into the thorax, crosses the diaphragm and connects with the Liver before joining the Gallbladder. It descends through the abdomen down to the groin and traverses the buttocks, where it reunites with the surface branch at GB 30. The surface branch descends from ST 12 to GB 22, in the fourth intercostal space and then downward to the free end of the 12th rib. Then it surrounds the anterior, superior aspect of the iliac spine and traverses the hip to reach the buttocks at GB 30. From there it follows the course of the iliotibial tract along the lateral thigh and reaches GB 34 at the head of the fibula. The surface branch of the Gallbladder Channel continues to descend along the fibula to the lateral malleolus. It passes over the dorsum of the foot, between the fourth and fifth metatarsal bone, and terminates at the lateral corner of the nail of the fourth toe.
##### Point Qualifications:

GB 34 | Yanglingquan | He-Sea Point, Earth Point; Meeting Point of Tendons
GB 36 | Waiqiu | Xi-Cleft Point
GB 37 | Guangming | Luo-Connecting Point
GB 38 | Yangfu | Jing-River Point, Fire Point
GB 39 | Xuanzhong | Meeting Point of Marrow
GB 40 | Qiuxu | Yuan-Source Point
GB 41 | Zulinqi | Shu-Stream Point, Wood Point; Confluent Point of the Dai Mai
GB 43 | Jiaxi | Ying-Spring Point, Water Point
GB 44 | Zuqiaoyin | Jing-Well Point, Metal Point
BL 19 | Danshu | Back-Shu Point of the Gallbladder
GB 24 | Riyue | Front-Mu Alarm Point of the Gallbladder