Department of Endocrine, Taleghani Edical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 
                    
                    
                    Abstract:       (2645 Views)
                    
                    
                    The Paper is divided into two parts; at first: The role of endocrine system on anatomical development of internal and external sexual organs; Second part discusses the Endocrine View point of gender identity gender role, impotence, frigidity and other psychosexual disorders like homosexualism and transsexualism.