Essence, Qi, Blood and Body Fluids Lecture Notes
Basic Concept and Generation of Essence
Definition of Essence: The marrow substance of living beings derived from parents and acquired from food essence. It serves as the origin of life and the basic material to form and sustain life activities within the human body. * Broad Sense: Refers to the refined nutritious substances transformed by qi, constituting the human body and maintaining its life activity. * Narrow Sense: Refers to the reproductive essence having the function of producing offspring; this is stored in the kidney.
Generation of Essence: * Innate Essence: Derived from parents, it is the origin of life and is mainly stored in the kidney. * Acquired Essence: Derived from foodstuffs (food essence). It depends on the spleen and stomach to convert foodstuff essence to nourish every viscus. * Integration: The innate essence and acquired essence combine to form the essence of the whole body. This process originates from the embryo (parents) and is sustained by the spleen and stomach (food).
Functional Roles of Essence
Reproduction: Kidney essence is the material basis for reproduction and producing offspring.
Promoting Growth and Development: Kidney essence serves as the material basis for the physiological life cycles of birth, growth, maturity, and old age.
Nourishing the Body: It nourishes the viscera to promote the physiological functions of the body.
Generating Marrow, Blood, and Qi: Essence acts as the foundational material for the secondary production of these vital substances.
Concept and Generation of Qi
Basic Concept: Qi is the primary state of the universe and the basic material that forms it. All things in the universe are generated by the movement of qi. In the human body, it is an energetic, refined material that is foundational to life activities.
Generation of Qi: Depends on the coordinated activities of the viscera: * Kidney: Stores innate essence to generate innate qi. * Spleen and Stomach: Transport and transform food to generate food essence. * Lung: Inhales the clear qi through respiration.
Composition of Body Qi: Derived from a combination of Clear Qi, Food Essence, and Innate Qi.
Distribution Classifications: Visceral qi, Meridian qi, Nutrient qi, and Defense qi.
Functional Categories of Qi
Promoting: * Stimulates the functions of viscera and tissues. * Promotes growth, development, and reproduction. * Promotes the generation, distribution, and discharge of blood and body fluid.
Warming: * Maintains a constant body temperature. * Promotes visceral and tissue functions. * Sustains the circulation of fluids such as blood and body fluids.
Defending: * Consolidates the body surface to defend against the invasion of exogenous pathogens. * Drives out exogenous pathogens if they have entered.
Consolidating: * Consolidates body fluids to avoid loss. This includes keeping blood inside vessels to avoid bleeding, and maintaining a balance of secretions (sweat, urine, saliva, gastric juice, etc.). * Consolidates viscera to maintain fixed locations and prevent ptosis.
Transforming: * Promotes the functions of viscera and meridians. * Promotes metabolism and inter-transformation among essence, qi, blood, and body fluid.
Movement and Classification of Qi
Moving Styles: * Ascending: Upward movement (e.g., Liver qi and Spleen qi). * Descending: Downward movement (e.g., Heart qi, Lung qi, and Fu-organs/Gallbladder). * Exiting: Interior to exterior movement. * Entering: Exterior to interior movement.
Significance of Movement: Regulates physiological functions to attain relative equilibrium.
Pathological Movement States: * Qi counterflow. * Qi sinking. * Qi collapse. * Qi block. * Qi stagnation (failure to circulate).
Specific Types of Qi: 1. Original Qi (Yuan Qi): Often called Primitive, Innate, or True qi. Generated from innate essence and distributed via the triple energizer. It promotes growth, reproduction, and the functions of viscera and sense organs. 2. Pectoral Qi (Zong Qi): Acquired qi accumulated in the chest. Formed by food essence and clear air. It sustains respiratory function (breath, voice) and assists the heart in blood circulation (pulse). 3. Nutrient Qi (Ying Qi): Related to Nutrient Yin. Generated from the nutritious part of food essence; it circulates inside blood vessels to generate blood and nourish the whole body. 4. Defense Qi (Wei Qi): Related to Defensive Yang. Generated from the vigorous part of food essence; it circulates rapidly outside vessels in the skin and interstices. It protects against pathogens, warms the body, and regulates sweat/pore closure.
Concept, Generation, and Function of Blood
Basic Concept: Red fluid circulating inside blood vessels. It is the "house of the mind" and essential for sustaining life. Extravasated blood is considered pathological.
Generation: Essence and blood share a common origin (liver and kidney source). Food essence and nutrient qi combine with body fluids, aided by the warming function of heart yang and lung activity, to become blood.
Functions: * Nourish and Moisten: Impacts complexion (rosy vs. sallow), muscles (strong/plump vs. emaciation), skin/hair (moist/luster vs. dry/lusterless), and physical action (flexible vs. forceless). * Mental Activities: Provides the material basis for vigorous mental activity, clear consciousness, and sensitive feelings. Deficiency leads to forgetfulness, insomnia, palpitation, or coma.
Circulation Management: * Promotion: Heart governs vessels; Lung assembles vessels; Liver governs smooth flow of qi. * Consolidation: Spleen governs blood (keeps it in vessels); Liver stores blood (regulates volume).
Body Fluids (Jin Ye)
General Term: Includes gastric juice, intestinal juice, snivel, saliva, and tears.
Classification: * Jin (Thin Fluid): Diluted and highly fluid. Distributed to skin, muscle, and orifices for moistening. * Ye (Thick Fluid): Dense and menses-like. Distributed to viscera, joints, and marrow for nourishing and lubricating.
Metabolism: * Generation: Involves the Stomach (digestion), Spleen (transport), and Small/Large Intestines (separating clear from turbid). * Distribution and Discharge: Lung (dispersing), Kidney and Bladder (urination), Liver (free flow of qi), and Spleen (ascending). Waste is discharged as sweat, urine, respiration, and feces.
Functions: Moistening, transforming into blood, regulating Yin-Yang balance (prosperous Yin offsets Yang heat), and discharging waste.
Interrelationships among Vital Substances
Essence and Qi: Essence generates Qi (Innate to Original, Food to Pectoral). Qi generates and consolidates essence (prevents premature ejaculation/spermatorrhea).
Essence and Blood: Both generated from food; essence and blood share the same source.
Qi and Blood: * Qi's effect on Blood: Qi generates blood (nutrient qi/transformation), circulates blood (driving force), and consolidates blood (prevents bleeding). * Blood's effect on Qi: Blood generates qi and acts as the carrier/vehicle for qi circulation. (Qi is the "general" of blood; Blood is the "mother" of qi).
Qi and Body Fluids: Qi generates, promotes the circulation of, and consolidates (controls discharge of) body fluids. Body fluids transport Qi.
Blood and Body Fluids: Share the same source (food essence). They can mutually transform. * Pathology: Severe bleeding leads to dry mouth/scanty urine (body fluid damage); avoid diaphoresis in bleeding patients. Severe fluid loss leads to thick blood/empty vessels; avoid blood stasis drugs in such cases.
Exercise and Review
Key Functions Summary: * Essence: Marrow, blood, and qi generation. * Nutrient Qi: Circulates within the vessels.
Questions and Discussion: * Question : Essence has the function of ________. * Answer: D. Generating marrow, blood and qi. * Question : Nutrient qi is a kind of qi circulating __________. * Answer: B. within the vessels.