The Eight Confluent acupoints refer to the eight acupoints where the essence of zang, fu, qi, blood, tendon, vessels, bone and marrow accumulates respectively. In clinical treatment, they are selected to treat the disorders related to the essence of the corresponding organs or tissues. For example, Geshu (BL 17), the confluent acupoint of the blood, is used to treat the syndrome of blood stagnation. (See Table 4 - 6)