What are Kidneys and their functions?

There are 2 kidneys, each about the size of a fist, located on either side of the spine at approximately waist height. They perform following functions:

  1. Remove waste products from the body and maintain constant volume and composition of body fluid.
  2. Release hormones that regulates blood pressure
  3. They produce a hormone called erythropoietin which plays an important role in the formation of red blood cells (RBC)
  4. Make our bones strong and healthy by activating vitamin D