Describe the three stages of urine production. Be sure to include how each stage

1. Filtration
   • first stage is the filtering of the blood
   • occurs in the renal corpuscle
   • removes water, sugar, amino acids, electrolytes, and other materials from the blood by moving the fluid out of the glomerulus and into Bowman's capsule
2. Reabsorption
   • begins after filtration when the filtrate passes through the four sections of the tubule
   • most of the water and some of the desirable substances, such as glucose and amino acids, are reabsorbed into the bloodstream
3. Secretion
   • final stage of urine production
   • occurs in the renal tubules
   • ammonia, uric acid, and other waste substances are added to the filtrate from the bloodstream