What is parturition? Which hormones are involved in the induction of parturition?

(N/A) Parturition is the process of giving birth to a baby once the development of the foetus is completed in the mother's womb.
The hormones involved in this process are $Oxytocin$ and $Relaxin$.
$Oxytocin$ acts on the uterine muscle and causes stronger uterine contractions,which pushes the foetus towards the birth canal for delivery.
$Relaxin$ is secreted by the ovary and placenta; it causes the relaxation of the pelvic ligaments and widens the birth canal to facilitate the process of childbirth.