Exams › NEET › Biology

The foetal ejection reflex in humans triggers release of

1. Oxytocin from maternal pituitary
2. Oxytocin from foetal pituitary
3. Human Chorionic Gonadotropin (hCG) from placenta
4. Human Placental Lactogen (hPL) from placenta

Correct answer: Oxytocin from maternal pituitary

Solution

The foetal ejection reflex is a positive feedback mechanism in which pressure/stretch in the cervix stimulates the maternal hypothalamus and posterior pituitary to release oxytocin. Oxytocin intensifies uterine contractions, helping expel the fetus.

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