1. Kidneys are very important in maintaining homeostasis. They remove cellular waste from the bloodstream.

2.  A tiny filtering unit of a kidney ◦ made of a cuplike structure and a duct ◦ water, sugar, salt & wastes from the blood pass into the cuplike structure and are squeezed into a narrow tubule

3.  Most materials are reabsorbed back into the bloodstream as the liquid moves through the tubule  The remaining liquid, excess water, salt, and other wastes form urine, which is removed from the body

4.  water  salt  other wastes

5.  They collect the urine and carry it to the bladder

6.  An expandable structure that can hold waste until we allow it to be released from our bodies.

7.  Eliminates urine from the body when the bladder is emptied

8.  a structure located in the brain that help regulate thirst and produces a hormone that regulates urine production