After the food intake is over, the food gets digested, assimilated and finally egested through the kidneys and anus. The urinary system:
• Filters waste materials from the blood.
• Regulates blood volume.
• Conserves useful materials, such as water, nutrients, and ions. The urinary system regulates how much water the body retains and how much it excretes
• maintains pH balance in the body
• Kidneys eliminate: blood-from the renal arteries and urine