What is the definition of "Organ System"?

Answer 1

http://www.google.com/search?hl=en&lr=&defl=en&q=define:Organ+system&sa=X&ei=eNU4TfPuMJTqgAf0oangCA&ved=0CBYQkAE

Answer 2

Thank you Ms.Sue!

Answer 3

You're welcome.