Third, we can see meridians
Meridians syetem goes to as deep as the level of viscera and as shallow
as the skin, and its network penetrates the entire body. Sick visceral
information can be projected onto the skin surface, showing different
colors. So the nature of meridians lesions can be evaluated on the basis
of the changes of skin colors.
Meridians are connected to the skin surface with large collaterals,
minute collaterals, superficial collaterals and twelve meridians
cutaneous areas. Let’s look at the color change of Yuji(LU10) acupoint
to explain the case. Yuji acupoint is the Brook point of hand Taiyin
Lung meridian, where the variation in skin color reflects the features
of the Lung medirian lesion. The blue color of Yuji skin mirrors the
cold in the Lung meridian, and the red color shows pathogenic heat. If
the skin appears in green, black and red colors intersection, it means
the Lung meridian suffers from simultaneous occurrence of cold and heat
syndromes. Yuji acupoint under Lung meridian skin is distributed in the
shape of a funnel, located at the first metacarpal midpoint radial
dorso-ventral boundary. The needle inserted 1.0-1.6 centimeters
vertically will reach the point. The specific anatomical arrangement is
as follows from shallow to deep: the skin, subcutaneous tissue, abductor
pollicis brevis and opponens pollicis, flexor hallucis brevis
aponeurosis and the first metacarpal periosteum[12]. Yuji acupoint’s
core is composed of staggered aponeurosis, periosteal and other fibrous
connective tissues, which are parts of the triple energizer-meridian
system. Skin surface, that is cutaneous areas of Yuji acupoint, is the
open window of Lung meridian. The color change shows that meridians are
tangible, functional and anatomic structures.