What is excretion?Need of excretion and parts of excretory system.
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the removal of waste material from our body is called exertion
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The removal of unwanted metabolic wastes from our body is defined as excretion.
Excretion is removal of harmful nitrogeneous wastes such as urea , ammonia and others from our body.
The kidney is the chief excreting organ in our body.
The kidney contains nephrons for doing the excretion .
They extract the wastes from blood and help to excrete the unwanted nitrogeneous wastes from our body.
Sweating is not excretion because that is done incidental and for other purposes . It only leads to cooling.
Excretion is very important as if excretion is not done and if wastes are left to accumulate in the blood after a certain level , the organism may die because urea and other wastes are poisionous.
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