Normally, in a healthy body, there are two kidneys, each of them are located on one side of the spine. The kidneys are bean-shaped and the size of each kidney is about the size of your clenched fist.
There are numerous functions in the body; the kidneys are responsible for three main tasks as follows:
1 - Waste blood:
A series of metabolism in the body wastes such as urea, creatinine and uric acid is produced and secreted by the kidneys produce urine to excrete these substances.