Main functions of the urinary system

The main function of the urinary system is to excrete metabolic waste, regulate the balance of water and electrolytes in the body, maintain the stability of the internal environment of the body, etc. 1. Excretion of metabolic waste The kidneys pass through the glomerular filtration and renal tubular reabsorption and secretion functions, and the waste products produced by metabolism in the body such as urea, creatinine, etc. and excess water are formed into urine, which is transported to the bladder for storage through the ureter, and finally discharged from the body through the urethra. If these metabolic wastes are not discharged in time, they will accumulate in the body and cause damage to the body.2. Regulate the balance of water and electrolytes in the body.The kidneys can regulate the intake and excretion of water according to the needs of the body to maintain water balance. For electrolytes, such as sodium ions, potassium ions, etc., the kidneys can selectively reabsorb and excrete them to maintain their normal concentration in the body. At the same time, the kidney can also maintain the acid-base balance through the regulation of hydrogen ions and bicarbonate ions, etc., to ensure that the internal environment of the body is in an appropriate state.3. Maintain the stability of the internal environment of the body Through the excretion of waste and the regulation of water, electrolytes and acid-base balance, the urinary system can make various physiological processes in the body normal. If the urinary system function is abnormal, it may lead to metabolic waste retention, water and sodium retention or electrolyte disorder, acid-base imbalance, etc., which may lead to a series of health problems, seriously affecting the normal function and health status of the body.