If it has not happened before, childbirth should take place during this week. If after week 42 of pregnancy the child has not yet been born, the doctor will induce the labour.
When the risk of continuing a pregnancy is bigger than that of inducing labor, oxytocin can be used by the doctors. This hormone is in charge of the uterine contractions just like the oxytocin that is secreted by the brain.
It is the penultimate week of the tenth month of pregnancy: the labour can take place at any time now, as it normally happens, according to the doctors, between the 38th and the 40th week of pregnancy.