The urinary system is like a drainage system for the body getting rid of extra waste and fluids. In order for urination to occur all body parts must work together. Some of those body parts are the Kidney, Ureters and the bladder.
The brain controls everything we do, and is often likened to the central computer within a vast, complicated communication network, working at lightning speed. Your brain controls more than you probably believe that it does. It doesn't control only your thoughts and actions, it controls the digestion of your food, your heart beating and the amount of stress you feel..
The body has two different systems which are the nervous system and the peripheral nervous system. Both systems have different uses and could be affected by different diseases. In this article you[ll learn more about this.
The urinary system produces stores and eliminates urine. In the this article you'll learn more about the process of each use and the why of each systems action.
This WebMD article describes the entire endocrine system. Here you could find the different parts of the system. Once you get all the parts it describes every single one and their functions. And finally it explains how the endocrine system causes some health issues.