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.
Urinary System. Your kidneys and bladder are the main parts of the urinary, or excretory, system. Your kidneys filter waste from your blood and use water, sodium, magnesium and potassium to make adjustments to your body's acid-base balance.Water is also required to help the urinary system excrete waste products.eproductive System. The internal and external reproductive organs make up your reproductive system. Nutrients absorbed from the digestive system, such as vitamin C, selenium, zinc and folate, support the formation of sperm and the development of eggs.