What Is The Function Of Yuan Source Points?
As their name implies, Yuan-Source Points are acupuncture points where Yuan Qi (Primordial Qi) gathers. Each of the body’s twelve main meridians has a Yuan-Source point – located between the toes and ankles, or the fingers and wrists. On the Yin meridians, the Source Points are also the Shu-Stream Points, and are used to tonify the five Yin organs. On the Yang meridians, the Yuan-Source Points are used to expel pathogenic factors (e.g. wind-heat or wind-cold) or to release excess patterns (e.g. to clear heat, resolve damp-cold or move qi stagnation).
Yuan Source Points And Their Corresponding Meridians
Tai Yuan (Great Abyss) LU9--- Lung Meridian of Hand-Taiyin
He Gu (Union Valley) LI4 --- Large Intestine Meridian of Hand-Yangming
Chong Yang (Surging Yang) ST42 --- Stomach Meridian of Foot-Yangming
Tai Bai (Supreme White) SP3 --- Spleen Meridian of Foot-Taiyin
Shen Men (Spirit Gate) HT7 --- Heart Meridian of Hand-Shaoyin
Wan Gu (Wrist Bone) SI4 --- Small Intestine Meridian of Hand-Taiyang
Jing Gu (Capital Bone) BL64 --- Urinary Bladder Meridian of Foot-Taiyang
Tai Xi (Great Ravine) KD3 --- Kidney Meridian of Foot-Shaoyin
Da Ling (Great Mound) PC7 --- Pericardium Meridian of Hand-Jueyin
Yang Chi (Yang Pool) SJ4 --- Sanjiao Meridian of Hand-Shaoyang
Qiu Xu (Hill Ruins) GB40 --- Gall Bladder Meridian of Foot-Shaoyang
Tai Chong (Great Surge) LV3 --- Liver Meridian of Foot-Jueyin
References & Suggested Reading
A Manual of Acupuncture by Peter Deadman. 
An Introduction To Meridian Therapy by Denmei Shudo.
Grasping The Wind by Ellis, Weisman & Boss.
