Ilya Gruzinov

Ilya Gruzinov was professor of anatomy and physiology at Imperial Moscow University. He discovered in 1812 that the actual source for a deep and pleasant vocal sound is the membrane, which is a posterior wall of trachea and bronchi.

Gruzinov was born to a family of a Russian orthodox priest. He received Christian education, then studied at Imperial Moscow University and Saint Petersburg Academy of Physicians and Surgeons followed by studies in Western Europe. He worked as adjunct professor of anatomy and professor of anatomy and physiology at the Medical Department of Moscow University. After Napoleons invasion of Russia in 1812 he began to help wounded soldiers in the Russian Army.

Source: Wikipedia