However, the major excretory product in human bodies is urea. It's produced by the liver as a byproduct of protein metabolism and is filtered out by the kidneys to be excreted in urine.
Other major excretory products in humans include:
* Carbon dioxide: Exhaled through the lungs.
* Water: Excreted through urine, sweat, and breathing.
* Undigested food: Excreted as feces.
* Salt: Excreted through urine and sweat.
Let me know if you have any other questions!
