What is the least active excretory organ in mammals?
please give the reason for your answer.
What do you think?
I think the answer is kidney.
The least active excretory organ in mammals is the skin. The primary function of the skin is not excretion but rather protection, sensation, and thermoregulation. However, the skin does play a role in excretion through a process called perspiration or sweating.
To determine the least active excretory organ, we can consider the main excretory organs in mammals: the kidneys, lungs, liver, and skin. The kidneys are responsible for filtering waste products from the blood and producing urine. The lungs are involved in the excretion of carbon dioxide and small amounts of water vapor. The liver is primarily responsible for filtering toxins and metabolizing waste products.
While all these organs contribute to excretion, the skin has a relatively smaller role compared to the others. The main excretory function of the skin is the production of sweat, which contains small amounts of urea, salts, and water. However, the amount of waste excreted through sweat is minimal compared to the significant waste-processing capabilities of the kidneys, lungs, and liver.
Therefore, based on the relative contribution to excretion, the skin is considered the least active excretory organ in mammals.