This thesis PhD in Nursing Sciences, the study aimed to describe the core and peripheral each of the social representations of sexual and reproductive health in students of the School of Nursing Culiacan, Mexico nucleus. The theoretical approach is based on the concepts of the theory of social representations of Moscovici (2000), and the main concepts of care Waldow (2004), Boff (2003), sexual and reproductive health (SSA / Mexico 2006) will guide the approach theoretical investigation of this methodological approach. With mixed quantitative / qualitative, semi-structured approach for structural and in-depth interviews with 20 participants procedural approach questionnaires were applied. For data analysis, analysis of the core of Abric (1994) and speech analysis according Jodelet (2006) was used. The results of the thesis unveiled three categories: i) Care sexual and reproductive health ...