In Chinese medicine, the function of the spleen organ-energy system includes the pancreas. Called the 'Minister of the Granary', the spleen and pancreas control extraction and assimilation of nutrients from food and fluids by providing the digestive enzymes and energy required by the stomach and small intestine. They regulate the quantity and quality of blood in circulation and coordinate with the kidneys to control fluid balance throughout the system. Spleen energy commands extraction of energy from stomach to lungs, where it is blended with energy from air to form True Human Energy. The spleen directly influences and is reflected by the tone and condition of muscle tissue. Weak limbs and muscular atrophy are indications of deficient spleen energy.
Spleen and pancreas condition is reflected externally by the color and tone of the lips: reddish moist lips indicate strong spleen function; pale dry lips are a sign of weak spleen function. The mouth is the spleen's external aperture, and temperamental moodiness is its associated emotion. The Chinese term for 'bad temper' is 'bad spleen energy', a psychophysiological association also reflected in the English term 'splenetic'.
Passage with points
The meridian starts from the medial side of the tip of the great toe (SP 1) runs along the medial aspect of the foot at the junction of the dorsum and sole of the foot ascends in front of the medial malleolus up to the medial aspect of the leg follows the posterior border of the tibia crosses and goes in front of the liver meridian passes through the anterior border of the medial aspect of the knee and thigh enters the abdomen and its pertaining organ the spleen also connects with the stomach.
Passage without points
The branch from the stomach ascends to pass through the diaphragm runs alongside the esophagus reaches the root of the tongue spreads over its lower surface. The branch from the stomach also traverses the diaphragm flows into the heart, where it links with the heart meridian.
The foot greater Yin (Taiyin) spleen meridian starts on the medial tip of the great toe and runs up the medial aspect of the foot along the border of the light and dark skin. It then passes in front of the medial malleolus and up the posterior side of the leg along the posterior margin of the tibia. Here, it crosses and runs anterior to the foot reverting Yin (Jueyin) liver meridian, passing medial to the knee and running up the anteromedial aspect of the thigh. It penetrates the abdomen and intersects with the conception vessel at CV-3 (Central Pole) and CV-4 (Pass Head) before homing to the spleen and netting the stomach. It continues upward, passes through the diaphragm to intersect with the foot lesser Yang (Shaoyang) gallbladder meridian at GB-24 (Sun and Moon) and the foot reverting Yin (Jueyin) liver meridian at LR-14, ascends to the side of the esophagus, crosses the hand greater Yin (Taiyin) lung meridian at LU-1, and finally proceeds up to the root of the tongue to disperse over the tongue’s lower surface. A branch breaks off in the area of the stomach, crossing the diaphragm to transport Qi to the heart.