Jings – Blood
Chi、Jing、blood and fluid all are basic substances that construct human body and sustain body’s vital activities.
Jing : Jing is a collective term for all useful, essential yin substances in human body including chi、blood、Jing and fluid.
Chi : Chi is intangible, vital microparticles in human body. As a vital force, it drives body systems’ physiological activities. Chinese medicinal theory regards chi is the very source creating the universe and Jing、blood and fluid are originated and transformed from chi.
Blood : Blood is red liquid.
Fluid : Fluid is a collective term for all liquids in body except blood.
Chi is yang and mobile with driving and warming force. Jing、blood and fluid are yin in static state with nourishing and moisturizing function.
From Chinese medicinal view, blood is a kind of Jing that build up the physical structure of human body and maintain body functions. Blood, residing in heart, stored in liver, governed by spleen, distributed in lung and rooted in kidney, flows in the blood vessels carrying nutrients to nourish body systems.
Where Is blood from?
- From Postnatal Jing
Postnatal Jing comes from the foods and water we eat and drink. Foods and water in stomach are digested and decomposed into chyme; and the chyme is further digested and transformed into Postnatal Jing by spleen; then, spleen distributes Postnatal Jing upward to lung; in lung, Postnatal Jing merges with nature’s air and transforms into human body’s chi (including Zong Chi、Ying Chi and Wei Chi). Ying Chi and Zong Chi, then, get distributed to heart and flow in blood vessels. In blood vessels Ying Chi transforms into blood. (Ying Chi flows thru middle-jiao and transforms into blood.)
- From marrow transforming into blood
The Jing stored in kidney fills in bones; in bones, kidney Jing is transformed into marrow; then, the marrow in bones can transform into blood.
The Functions of Blood
- To nourish and moisturize the whole body
Blood circulates the whole body with Ying Chi (Nutritional Chi) flowing inside the body. The Nutritional Chi carries nutrients to body organs and supports organ’s vital activities.
Blood’s healthy nourishment can reflect from our facial complexion、skin and body hair. If blood supply is strong, facial complexion is bright, skin and hair look shinning and moist, and muscles、bones and nails will grow strong and healthy. If blood supply is weak, the complexion would be pale, skin would be dry and hair would lose its luster.
- To support body’s vitality and senses
The book of “The Yellow Emperor’s Inner Canon” says “A person’s liver receives blood, then he can see; his feet receive blood, then he can walk; his palms receive blood, then he can grip; that is, his body has blood, then he can control his body’s vital activities and senses”. The book emphasizes the importance of blood to our body movements and sensing functions. If a person’s blood is deficient, he may have dizziness、blurred vision、buzzing ears、weak limbs etc.
- To support healthy mind
Heart masters our mind. We can have clear mind only when heart gets sufficient blood supply. If a person’s heart doesn’t get enough blood supply, he could have insomnia, or worse, lose his mind. vice versa, when a person has insomnia, dreaming a lot, he might have anemia.
How does blood flow?
Blood flows inside the blood vessels and circulates the body. Heart chi drives blood flows. Lung, in Chinese medicinal theory, also assists blood flow.
The relationship of blood and Zang organs
- Heart: Heart masters blood.
Blood flow driven by heart chi supplies nutrition to the whole body sustaining the physiological activities of the body. Postnatal Jing transported to lung, merging with fresh air, transforms into chi and blood in heart. Chi and blood then flow in blood vessels.
- Lung: Lung masters chi.
Lung takes a part in the production of Zong Chi (Pectoral Chi). All blood vessels converge in lung; in lung, food essence merges with fresh air and transforms into chi; chi flows to heart inside blood vessel and transforms into blood. So, in short words, chi can produce blood. Strong lung chi boosts the function of producing blood. Weak lung chi weakens blood production.
- Spleen: Spleen is the very source of chi and blood.
Food essence is the fundamental substance transforming into chi and blood. It is spleen that leads the whole digestion and transformation process and digests and transforms foods into food essence.
- Liver: Liver stores blood and regulates the amount of blood.
Liver stores blood and supplies blood whenever body organs need.
The Relationship of blood and chi、fluid
Blood flows inside the blood vessels, and fluid flows outside the blood vessels. Thru chi’s transformation mechanism, fluid can seep into blood and transform into blood, and blood can seep out of the vessels and transform into fluid. Both blood and fluid nourish the body.
Chi’s functions to blood:
Chi can transform into blood. Driven by chi, blood flows. Blood, restrained by chi, flows inside blood vessels.
Blood’s functions to chi:
Blood nourishes chi. Chi can only be formed while nutrients is healthily supplied by blood. Ying Chi flows in blood and relies on blood flow to be transported to whole body.