L.A. Orbeli - outstanding physiologist and science leader of the twentieth century.

L.A. Orbeli and his school developed new directions in physiology: evolutionary physiology, the theory of adaptational-trophic functions of the sympathetic nervous system, the theory of coordination of functions, and neuroendocrine regulations in the body. Orbeli enriched the study of the physiology of the cerebellum, the sensory organs, the kidneys, and the study of pain. His name is associated with the development of the foundation of physiology of extreme states (the physiology of deep-sea exploration, high altitude, and high velocity flight).