Question

What stimulates pituitary to release the hormone responsible for parturition? Name the hormone.

Answer 1

Parturition is the expelling of the fully formed young one from the mother's uterus after the gestation period of 280 days in human females. Parturation means simply the process by which the baby is born. The signal of parturition originates from the fully developed foetus. It induces mild uterine contractions known as foetal ejection reflex.

Oxytocin hormone secreted by the neurohypophysis that specifically causes uterine contraction. Foetus' pituitary gland also separately produce increasing quantities oxytocin that could possibly play a role in exciting the uterus. The adrenal gland secretes a large quantity of cortisol that also a possible uterine stimulant.