Understand excretion — the removal of waste products from the body — and the organs involved.
The kidneys filter blood to remove waste as urine. The skin excretes waste through sweat. The lungs excrete carbon dioxide.
What organ filters blood to produce urine?
The kidneys
What waste product do the lungs excrete?
Carbon dioxide
Excretion removes toxic waste products of metabolism from the body, preventing them from building up to harmful levels.
What would happen if waste products weren't removed from the body?
They would build up to toxic levels and could poison the body's cells and tissues
Is sweating only about cooling the body, or does it serve another function?
It also serves excretion, removing some waste products like excess salts and urea through the skin
1. What is excretion?
2. What organ produces urine?
3. What waste is excreted through sweat?
4. What waste gas is excreted by the lungs?
5. Why is excretion necessary for the body?