Explanation

The blood pressure in glomerular capillaries become very high, so that there is continues process of ultra-filtration. Glomerular filtrate contains a large amount of water and other dissolved substances such as urea, uric acid, creatinine, amino acids, glucose, sodium, potassium, vitamins, etc. About 120 mL, GP is produced per minute, $i.e.,$ approx 170 L filtrate is produced in 24 hour.