From evaluative pattern of invertebrates and vertebrates, some interesting peculiarities can be easily observed and some change in environmental world colonized produced strange anatomic configurations.For example, decussatio piramidy present in motors system and the cervical vertebrae tract.This kind of evolutionary process can be responsible of a sort of intrinsic weakness of a system to be Deeply investigate to produce new hypotesis in some spinal cord conditions.

M. Luisetto, Dottore in Filosofia, Vicepresidente Onorario IMA Accademia Internazionale Mariinskaya, ramo scienze naturali, Farmacologo applicato.Latyshev O. Yu.,membro corrispondente di Intern. Professore dell'Accademia delle scienze psicologiche (IAPS) alla Cypress University e dell'Accademia russa di storia naturale, presidente dell'Accademia IMA.