Functional Aspects Of The Body Are Governed by Three Biological Elements. Earth and Air combine to form as Vata dosha.Vata governs the principles of movement force which directs nerve impulses, circulation, respiration and elimination.Fire and Water combine to form as pitta dosha. Pitta dosha governs the process of transformation or metabolism. Pitta is also responsible for metabolism in the organ and tissue systems. The Digestive System in our body resembles Pitta dosha.Water and Earch combine to form the kapha dosha. Kapha supports the physical structure of the organism. It nourishes and lubricates the tissues of the body. Kapha is the ojas and bala of the body.