**Gray, SD. Cellular physiology of the vocal folds. The Otolaryngologic Clinics of North America. V.30. No. 4. pp 679-98. Aug 2000. The vocal folds are made up of three major layers from deep to superficial: 1.
As of 1 January 2017, the population of Russian Federation was estimated to be 146,389,999 people. This is an increase of 0.04 % (59,995 people) compared to population of 146,330,004 the year before. In 2016 the natural increase was negative, as the number of deaths exceeded the number of live births by 168,280.
Of Russia's estimated 150m population, it is thought that over 81% speak the official language of Russian as their first and only language. Most speakers of a minority language are also bilingual speakers of Russian.