[Challenges to an interdisciplinary action in basic care: implications related to composition of family health teams]

The Family Health Program emerges as a new strategy of health care as well as a reorientation of the assistance model. Based on these presuppositions, this article reflects on the relationship between integrality in basic care and the composition of family health teams, in the view of the Family Health Program minimum team members, characterizing the possible fields of action and the contributions of other health professionals in the Family Health Program. Undergraduates and members of a Family Health Program team from a certain city in the south of Brazil participated in this research. The quality of personal or professional expertise of these professionals contributed to a better understanding of their intervention possibilities. The investigation also allowed the analysis of how the family health strategy has been reaching the members who constitute the minimum teams at local context. In addition to that, the research highlighted how the integrality and interdisciplinarity have been understood by the teams members, and the relationships between team arrangement and the (im)possibilities of action.