Friday, January 25, 2013

Excretory System

Dear people,
The first thing that happens in the Excretory system is, after food is digested   your body gets rid of waste minerals. And the liquid waste called goes to the kidneys that make urine. There are nephrons in the kidney The liver on the other hand filters blood. When the blood goes through the ureter to the bladder. The process of excretion the urethra removes the urine. Lungs help you breath. and through the skin the same but different thing come out.




No comments:

Post a Comment