After the Russian Revolution of 1917, Georgia declared independence in 1918, but the democratic Republic of Georgia, ruled by a social-democratic government, was invaded by the Red Army in 1921, a few days after it was recognized by European states.
And.. The Semilunar Valves prevent the back flow of the blood from the arteries to the ventricles. Explain what happens to tissues, such as the heart, or the brain, if oxygenated blood is not delivered in a timely manner. The tissue of the organ starts to die.
When a heart attack strikes, blocked blood flow to the heart starves your heart muscle of oxygen. When you arrive at the hospital with a life-threatening blockage, healthcare professionals will work to restore blood flow to the heart as quickly as possible through angioplasty and stenting.