Crystal



Excretory System Test

1. What is the largest organ of your body? The largest organ in your body is your skin.  2 Explain why lungs are part of the Excretory System.  Lungs are part of the Excretory system because it helps remove waste by breathing out carbon dioxide.

3. What does the whole Excretory System do? The Excretory system gets wastes out of your body. They get wastes out by organs all working together for one purpose:to get waste out of the body. The organs are skin, kidneys, bladder, and lungs.