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The nitrogenous wastes are removed from the body by the excretory system. It is composed of kidneys, ureters, urinary bladder and urethra.
These are bean shaped structures present in the abdominal cavity. The functional units of the kidney are called Nephrons which filter the blood and form the urine.
Why do we drink water? Our body contains about 70% water. Some parts have more water like the grey matter of the brain (about 85%) and some less, like fat cell (about 15%).
We normally consume 1.5 to 3.5 litres of water every day in the form of food and water
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