This book and give a brief explanation of how the facilitator nerves and pretentious, which is a reference for students of university courses in the fields of science and member functions, cell science and basic medical sciences; We praise the first release of the book to give a brief explanation and facilitator of how the nerves and pretentious. The book begins discussing the nature of payments nerve, has been considered for such electrical accidents as just the flow of ions through the channels of molecular cell membrane, but the attention he turned towards transport Almcbuge, due attention to the role played by ionic channels, and then discusses the nature of the last chapters muscular contraction , in particular the relationship between the installation and function of cell contraction.