The Posterior Lobe of the Pituitary Gland (or neurophpophysis) stores and releases hormones secreted by the hypothalamus section of the brain including: 1  ADH (Antidiuretic hormone) stimulates the smooth muscles, blood vessels and the intestine.
In 1922, the Communists were victorious, forming the Soviet Union with the unification of the Russian, Transcaucasian, Ukrainian, and Byelorussian republics. Following Lenin's death in 1924, a troika and a brief power struggle, Joseph Stalin came to power in the mid-1920s.he Soviet Union was a single-party state, governed by the Communist Party with Moscow as its capital. The Soviet Union had its roots in 1917 when the Bolsheviks, headed by Vladimir Lenin, led the October Revolution which overthrew the provisional government that had replaced the Tsar.
In 1980, Ronald Reagan became president of the USA. As a strong anti-communist, he called the Soviet Union the evil empire and increased spending on arms. The US military developed the neutron bomb, cruise missiles and a Star Wars defence system using space satellites. By 1985, the Soviet Union was in trouble. In 1985, Mikhail Gorbachev became leader of the USSR. 1  He withdrew from Afghanistan. 2  He realised that the USSR could not afford the arms race, and opened the START (Strategic Arms Reduction Talks) with the USA. 3  He began to reform the Soviet system by allowing perestroika (competition in business) and glasnost (freedom).