Putin's rule by fear. Russian President Vladimir Putin listens during a meeting in the Novo-Ogaryovo residence, outside Moscow, Russia, Monday, March 2, 2015. Russian President Vladimir Putin listens during a meeting in the Novo-Ogaryovo residence, outside Moscow, Russia, Monday, March 2, 2015. One can't help but fear Vladimir Putin. Russian President Vladimir Putin wants the public to believe he doesn't benefit from the death of Boris Nemtsov, and some of the slain politician's anti-Kremlin allies seem inclined to agree.
Here are the three main parts of the excretory system and what they do:   The skin-it's responsible for producing sweat, which helps regulate the salt concentration in â¦ the body. When you sweat, the salt helps evaporate the water and, in turn, cools off the body.
Excretory System. The excretory system is in charge of getting rid of bodily wastes and excess water. Jobs of the excretory system: Maintain volume of extracellular (outside the cells) fluid. Maintain ionic balance in extracellular fluid. Maintain pH and osmotic concentration of the extracellular fluid. Excrete toxic by-products such as urea, ammonia, and uric acid.