Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector6485910.17816/kazmj64859Short CommunicationThe role of the upper segment of the respiratory tract and the tasks of modern rhinolaryngo-otiatricsVasil'yevaO.info@eco-vector.com06061926225-60604202106042021Copyright © 1926, Vasil'yeva O.1926<p>Prof. Tsytovich (Vesti, Rhinolaryngo-Otiatrii, No. 1) notes that correct nasal breathing is a powerful factor in blood circulation, and a variety of diseases can cause its disorders, in particular, a) heart disease (expansion of its cavities and degeneration of the heart muscle); b) vascular disease in general, especially cerebral vessels (arteriosclerosis); c) brain diseases (sclerosis, epilepsy, headaches, decreased mental performance, etc.); d) diseases of the peripheral nerves; finally, e) blood diseases.</p>