The foetal ejection reflex in humans triggers the release of:

Step-by-step solution

Signals of parturition originate in the form of mild uterine contraction. The foetus signals that is ready (mature) by secreting certain hormones which diffuse through placenta into mother's blood and cause secretion of oxytocin which initiate uterine contractions. These are called foetal ejection reflexes. It is accompanied by rise in oestrogen to progesterone ratio, increase in oxytocin receptors in uterine muscles, increase in level of oxytocin secretion by mother's pituitary gland. Related Theory As onset of la