Qi, Blood and Body Fluid

Qi, Blood and Body Fluid are fundamental substances in the human body to sustain normal vital activities. Their existence and functions, especially those of Qi, are generally manifest in the functional activities of various tissues and organs. Together with the Zang-fu organs and the channels and collaterals, constitute the theoretical basis of human physiology in traditional Chinese medicine.

1. Qi – The word Qi connotes both substance and function.
1. Source Qi – known as the Qi of the kidney
2. Clean Qi - from essence of food
2. The so-called "arrival of Qi" in acupuncture therapy means that the needling has produced its effect with the calling into function of the channels.
3. Blood – The essence of food derived by digestion and absorption of the spleen and stomach is transported to the heart and lung and transformed into red blood by the two organs. The kidney stores essence. The essence of the kidney produces bone marrow, which in turn produces blood. Blood is formed from essence, including the essence of food and essence of the kidney. The Qi of the kidney promotes transportation and transformation by the spleen and stomach and strengthens the blood formation. Blood is constituted of nutrient Qi, body fluid and essence of the kidney, the material base for the functioning of blood is to circulate in the vessels nourishing the body and promote the functional activities of various tissues and organs. Blood and Qi are closely related.
4. Body Fluid – Food and drink, especially the latter, after absorption become body fluid, which exists in the blood and the interstices of the tissues. Body fluid is of two types:
1. Lucid