The role of urine is to help the body to discharge waste and drainage, etc..
1. Discharge of waste: the human body after metabolism will produce a lot of metabolites, such as: creatinine, urea, etc., once these substances accumulate in the body too much, it will lead to the accumulation of toxins, the serious cases can appear uremia. But if the filtration function is good, can be excreted by the kidney with urine, to maintain the stability of the body’s internal environment.
2. Drainage: the body will ingest a lot of water every day, such as urine can not be excreted, it will penetrate into the cellular space, resulting in excessive tissue fluid to appear serious edema phenomenon.
After the blood enters the glomerulus, 99% of the water and the vast majority of small molecules are reabsorbed by capillaries and renal tubules to form terminal urine, which enters the bladder through the collecting ducts, ureters, etc. and is excreted as urine.
Urination has many important physiological functions, such as once the occurrence of oliguria or anuria, should promptly consult a doctor, active treatment.