What happens when you urinate?

Normal urine is clear, transparent, with a small amount of foam, foam is due to urinating too fast, urethral secretions and other reasons. This type of foam is often quickly dissipated, when the amount of foam is more and not easy to dissipate, consider the possibility of proteinuria. Proteinuria includes physiological proteinuria and pathological proteinuria. Under the stimulation of strenuous exercise, fever, chills, mental tension and sympathetic nerve excitation, the body can cause increased glomerular capillary permeability, showing proteinuria, which is called physiological proteinuria. The urinary system often has no organic pathological changes, and the protein in urine is temporary and light. Pathological proteinuria is mostly proteinuria caused by kidney or other system diseases. It is persistent proteinuria, which can be divided into glomerular proteinuria, tubular proteinuria, mixed proteinuria, overflow proteinuria and organizational proteinuria. There is also a kind of pseudoproteinuria, which is mainly caused by a large amount of blood, pus, mucus and other components mixed in urine. Urine protein quantitative test positive, itself and no kidney damage, often seen in urinary system inflammation.