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Urine is the liquid waste product of the body. Urine is formed in the kidney, by thousands of units, which secrete urine and pour it into the bladder or the basti through ureters. These units are microscopic and, hence their openings into the pelvis are not visible.
After the digestion of food, the useful portion is absorbed in the small intestine in the form of rasa i.e. body fluids. The remaining portion is termed as kitta, which is further differentiated into liquid as well as solid waste products by the mucus membrane of the large intestine. Water and liquid i.e. soluble waste products, which are the precursors of urine, are absorbed in the large intestine.
Rasa (body fluids) together with water and soluble waste products absorbed from intestine reaches heart and is pumped by heart throughout the body. It supplies nutrition to all the tissues and carries waste products from the tissues.
The gaseous waste products reach lungs, whereas the liquid waste products reach the kidneys and skin.
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Spiritual Principles
