Rakta Agni
The metabolic fire specific to blood tissue that transforms asthayi rakta into sthayi rakta dhatu and governs erythrogenesis in bone marrow.
Functions of Rakta Agni
Rakta agni is present in the red bone marrow, liver, and spleen—the root organs of rakta vaha srotas. In the embryo, rakta agni produces new red blood cells in the liver and spleen. After birth, it is predominantly active in the red bone marrow, which takes over erythrogenesis (production of new red blood cells).
In the liver, rakta agni works in conjunction with ranjaka agni to destroy old red blood cells. In the spleen, its role is to filter bacteria and parasites. In the bone marrow, it produces new red blood cells. Rakta agni also governs the further transformation of asthayi rakta (unstable blood tissue) into sthayi rakta (stable blood tissue). Certain enzymes within rakta dhatu that create new capillaries through anastomosis are also components of rakta agni.
Source: Textbook of Ayurveda: Fundamental Principles, Chapter Five: Dhatus Part I (Rasa, Rakta, Mamsa)
Definition
Rakta agni is the fire component present in the blood. It is responsible for the digestion and assimilation of nutrients that nourish rakta dhatu (blood tissue).
Source: Textbook of Ayurveda: Fundamental Principles, Glossary
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