main excretory organ of humans
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Anus.... Is the main excretory organ
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The Excretory Organs
Excretion in humans is brought about by the following organs:
1) Kidneys:
⇒ They are the primary excretory organs eliminating nitrogenous wastes chiefly urea from the blood and throwing it out in the form of urine.
2) Sweat glands :
⇒ Excretory by sweat glands cannot be counted as excretion but it is incidental . These glands are primarily concerned with thermoregulation.
The sweat which is secreted also carries small amounts of nitrogenous wastes.
Sweat glands pass out sweat only when required for cooling, so I guess they are not totally considered as excretory .
3) Lungs:
The lungs releases carbon dioxide ( CO₂) in the expired air through lungs.
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