Question

The foetal ejection reflex in humans triggers the release of ______ hormone from ______.

Options

• oxytocin, foetal pituitary

• oxytocin, maternal pituitary

• human chorionic gonadotropin, placenta

• progesterone, corpus luteum

Answer 1

The foetal ejection reflex in humans triggers the release of oxytocin hormone from maternal pituitary.

Explanation:

Signals from the fully developed foetus and placenta trigger the foetal ejection reflex, which releases oxytocin from the maternal pituitary; oxytocin then strengthens uterine contractions in a positive feedback loop, leading to parturition.