6. How does your kidney work?
The urinary system in human beings consists of two kidneys ureters,
urinary bladder and urethra. The reddish brown, bean shaped
kidneys are situated at the back of the abdominal cavity, one on each
side of the vertebral column.
The kidneys are made up of large number of coated tube-shaped
filters called nephrons. They carry nitrogenous waste material and
excess water from the blood and form urine which passes via ureters
to the urinary bladder.
When the bladder gets filled with urine, it is exerted through the
urethra by contraction of muscles around the urinary bladder. Waste
material removal is important for all living organisms. Normal
kidney function is essential for a good health.
