V.I. Torshin - Dr.Sc. (Biol.), Professor, Head of Department of Human Physiology, Peoples - friendship University of Russia. E-mail: vtorshin@mail.ru
Geda Semu Mengistu - Post-graduate Student, Department of Human Physiology, Peoples - friendship University of Russia. E-mail: semu.mengistu@yahoo.com
A.E. Severin - Dr.Sc. (Med.), Professor, Department of Human Normal Physiology, Peoples - friendship University of Russia. E-mail: aesever@mail.ru
Mansur Numman - Ph.D., Competitor of the Chair of Normal Physiology, Peoples - friendship University of Russia. E-mail: d-64-158@mail.ru

A.E. Severin - Dr.Sc. (Med.), Professor, Department of Normal Physiology, Medical Faculty of the Russian University of Peoples\' Friendship. E-mail: aesever@mail.ru V.I. Torshin - Dr.Sc. (Biol.), Professor, Head of the Department of Normal Physiology, Medical Faculty of the Russian University of Peoples\' Friendship (Russia, Moscow). E-mail: vtorshin@mail.ru N. Mansour - Dr.Sc. (Med.),Competitor of the Department of Normal Physiology, Russian Peoples Friendship University. E-mail: d-64-158@@mail.ru I.A. Berseneva - Ph.D. (Biol.), Head of Department of Anatomy, Physiology and Biochemistry of the Moscow Regional Institute of Humanities (Moscow region, Orekhovo-Zuevo). E-mail: berseneva_irina@inbox.ru T.V. Dyachkova - Ph.D. (Biol.), Assistant Chair of Anatomy, Physiology and Biochemistry of the Moscow Regional Institute of Humanities. E-mail: berseneva_irina@inbox.ru E.A. Severina - Post-graduate Student, Normal Physiology of the Russian People\'s Friendship University N.E. Aimautova - Ph.D. (Phys.), Assistant Professor, Psychology Russian Peoples Friendship University. E-mail filfak-rudn@mail.ru