[The cibernetic sistem of mechanism of labour - pedagogical interpretation].

The authors, in this work destined to midwifery students, consider specially the phenomena of the mechanism of labour, from the point of view of its axiomatic interpretation.

[The protection of the perineoum of the patient during the delivery of the head and shoulders of the fetus].

The authors describe a technique of perineoum protection during the delivery of the fetus head and shoulders.

[Psychiatric nursing as the chosen field for practice].

Survey to fund the opinion of 59 nursing students,about the reason for not choosing psychiatric musing as the field for future practice. These students were from four schools of nursing of the Great São Paulo.