1, Hand Yin San Meridian: Hand Taiyin Lung Meridian, Hand Shaoyin Heart Meridian and Hand Jueyin Pericardium Meridian.
2. Hand Sanyang Meridian: Hand Yangming Large Intestine Meridian, Hand Taiyang Small Intestine Meridian, Hand Shaoyang Sanjiao Meridian.
3. Foot Sanyang Meridian: Foot Yangming Stomach Meridian, Foot Taiyang Bladder Meridian, Foot Shaoyang Gallbladder Meridian.
4. Foot Yin San Meridian: Foot Taiyin Spleen Meridian, Foot Shaoyin Kidney Meridian and Foot Jueyin Liver Meridian.
The twelve meridians has the functions of activating qi and blood, connecting internal and external organs, and communicating up and down. And regardless of exogenous pathogens or visceral dysfunction, it will cause meridian diseases. Therefore, understanding the circulation, function and incidence of the twelve meridians is of great significance for the prevention and treatment of diseases.
Extended data:
I. Distribution
The twelve meridians is symmetrically distributed in the head, trunk and limbs on the body surface, running through the whole body. Six yin meridians are distributed in the inner limbs, chest and abdomen, and six yang meridians are distributed in the outer limbs, head, face and trunk.
The distribution law of the twelve meridians in four limbs is that the upper limbs are Taiyin Lung Meridian, Jueyin Pericardium Meridian and Shaoyin Heart Meridian, and the lower limbs are Taiyin Foot Spleen Meridian, Jueyin Foot Liver Meridian and Shaoyin Foot Kidney Meridian respectively. Yin San's foot passes through Jueyin before, Taiyin in the middle, Shaoyin after, and Taiyin meets the medial malleolus more than 8 inches.
The upper limbs of Sanyang meridian are Yangming large intestine meridian in the forehand, Sanjiao meridian in the middle hand, Taiyang small intestine meridian in the back hand, Yangming stomach meridian in the forefoot, gallbladder meridian in the middle foot and Taiyang bladder meridian in the back foot.
The distribution of the twelve meridians in the trunk is as follows: the kidney meridian of Foot Shaoyin opens 2 inches beside the thoracic midline and 0.5 inches beside the ventral midline; The spleen meridian of foot Taiyin runs 6 inches beside the thoracic midline and 4 inches beside the abdominal midline; The regularity of circulation of the meridian of Foot Jueyin is not strong.
The stomach meridian of Foot Yangming is distributed 4 inches beside the thoracic midline and 2 inches beside the abdominal midline. The meridian of the foot sun runs on the back, opening 1.5 inches and 3 inches beside the midline of the back respectively; The gallbladder meridian of the foot is distributed on the side of the body.
Second, the relationship between exterior and interior.
Yin San Yang, hand and foot the twelve meridians communicate with each other through meridians, forming six pairs, which are "combination of exterior and interior", that is, "foot sun and shaoyin are exterior and interior, shaoyang and jueyin are exterior and interior, and Yangming and Taiyin are exterior and interior, that is, foot yin and yang. The sun and shaoyin of the hand are exterior and interior, shaoyang and the heart (the pericardium meridian of the hand jueyin) are exterior and interior, and Yangming and Taiyin are exterior and interior, which are the yin and yang of the hand. "
The exterior and interior meridians respectively follow the relative positions of the inside and outside of the limbs and intersect at the ends of the limbs; Collaterals also belong to zang-fu organs, which form the yin-yang relationship of zang-fu.
The twelve meridians's relationship between exterior and interior is not only strengthened by the connection of the two meridians, but also because the collaterals belong to the same zang-fu organ, which makes the zang-fu organs with exterior and interior mutually cooperate in physiological function and affect each other in pathology. In treatment, the acupoints of the two meridians often cross each other.
Baidu Encyclopedia-the twelve meridians