Well, let me introduce you to some hormones that do just those things: the "hunger hormones," leptin and ghrelin.
Leptin is a hormone, made by fat cells, that decreases your appetite. Ghrelin is a hormone that increases appetite, and also plays a role in body weight.
Sleep Apnea. They have to use a breathing machine to get a good nights sleep.
Answer:
The excretory system is responsible for eleminating waste products and filtering body fluids.
Are you ok? Hope you have a wonderful day :)
