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By Li Ding
From the book:
"Acupuncture, Meridian Theory and Acupuncture Points"
Each of the 12 regular meridians has a Yuan (Source) point near the wrist or ankle joints
of the four extremities through which the vital energy of the zangfu organs passes and to
some extent accumulates. "Yuan" means origin, and refers to the source of vital
energy through which the pathological changes of zangfu organs are manifested. The chapter
on the Nine Needles and the Twelve Sources of the book Lingshu states, "The twelve
Yuan (source) points are indicated in disorders of the internal organs." The vital
energy of the twelve regular meridians is ciosely associated with the Sanjiao which
generalizes the functional activities of the stomach, spleen and kidney and is the
manifestation of the function of vital energy. Vital energy, originating from the congen
ital qi of the kidneys, is transported all over the body. It goes to the exterior,
interior, superior and inferior parts of the body, following the courses of the meridians
and maintaining vital functions of the human body. This process is maintained by the
Sanjiao.
Clinically, Yuan (source) points are of great significance in treating diseases
of the internal organs. Puncturing the Yuan (source) points stimulates the vital energy of
the regular meridians, regulates the functional activities of the internal organs,
reinforces antipathogenic factors and eliminates pathogenic factors. This method of
treating diseases deals principally with the root causes. The Yuan (source) point from the
affected meridian is often combined with the Luo (connecting) point of the
internally-externally related meridians in use.
This is known as the combination of the
main point (Yuan) and the accompanying point (Luo), or simply the combination of the Yuan
(source) point and the Luo (connecting) point. Functionally, the Lung Meridian of
Hand-Taiyin and the Large Intestine Meridian of Hand-Yangming are internally-externally
related. The Yuan (source) point from the primarily affected meridian is combined with the
Luo (connecting) point of its externally-internally related meridian. For example, if the
Lung Meridian of Hand-Taiyin (interior) becomes diseased, sore throat, cough and asthma
will occur. Taiyuan (Lu.9) is chosen as the main point and Pianli (L.I.6) is chosen as the
accompanying one in the prescription. If the Large Intestine Meridian of Hand- Yangming
(exterior) becomes diseased, e.g. toothache, Hegu (L.I.4), the Yuan (source) point of the
Large Intestine Meridian of Hand-Yangming, and Lieque (Lu.7), the Luo (connecting) point
of the Lung Meridian of Hand-Taiyin are prescribed.
Clinically, research has shown that
pathological changes of the zangfu organs are often manifested at the twelve Yuan (source)
points. For example, tenderness at a Yuan (source) point often indicates pathological
changes of the associated meridian and the internally related organ.
In researching the meridian over the last few decades, Yuan (source) points were used
as the key points to detect changes of cutaneous electrical resistance and to examine the
condition of qi and blood of the twelve regular meridians. It was discovered that a
significantly accurate estimation of the nature of many zangfu disorders could be made by
using these methods.
The 12 Yuan (source) points are within the category of the Five Shu Points. Each Yang
meridian has its own Yuan (source) point which is located between the Shu-stream point and
the Jing-well point. The 6 Yin meridians do not have separate Yuan (source) points, their
Shu-stream points being concurrently the Yuan (source) points, i.e. the Yuan (source)
points and Shu-stream points of Yin meridians are actually the same.
| The Twelve Yuan (Source) Points |
Meridians |
| Taiyuan (Lu.9) |
The Lung Meridian of Hand-Taiyin |
| Hegu (L.I.4) |
The Large Intestine Meridian of Hand-Yangming
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| Chongyang (St. 42) |
The Stomach Meridian of Foot-Yangming |
| Taibai (Sp.3) |
The Spleen Meridian of Foot-Taiyin |
| Shenmen (H.7) |
The Heart Meridian of Hand-Shaoyin |
| Hand-Wangu (S.I.4) |
The Small Intestine Meridian of Hand-Taiyang
|
| Jinggu (U.B.64) |
The Urinary Bladder Meridian of Foot-Taiyang
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| Taixi (K.3) |
The Kidney Meridian of Foot-Shaoyang |
| Daling (P.7) |
The Pericardium Meridian of Hand-Jueyin |
| Yangchi (S.J.4) |
The Sanjiao Meridian of Hand-Shaoyang |
| QiuXu (G.B.40) |
The Gall Bladder Meridian of Foot-Shaoyang |
| Taichong (Liv.3) |
The Liver Meridian of Foot-Jueyin
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