Urinary

=**__The Urinary System__**=

**__Physiology__**
The urinary system collects ammonia-based waste (made from the breakdown of protein) and removes it. It also helps control water and salt balance in the body.

**__Anatomy__**
Blood flows through the **kidneys** where passive and active transport occur. This happens in a series of loops where water and waste is moved from the blood into tubes in the kidneys and each loop serves to move some of that important water back into the blood while concentrating the waste. The fluid that leaves the **kidneys** is known as urine it moves down the **ureters** and into the **urinary bladder** where the urine waits until **voiding** or **urination** occurs. While urinating, the **urine** moves out of the **urinary bladder** and down the **urethra** out into the environment.

A brief clip.