Q. Foetal ejection reflex in human female is induced by :

Q. Foetal ejection reflex in human female is induced by :

(a) Differentiation of mammary glands

(b) Pressure exerted by amniotic fluid

(c) Differentiation of mammary glands

(d) Fully developed foetus and placenta

Solution :

Correct option : D Parturition is an induced Complex neuroendocrine mechanism. In this signals are originated from a fully developed fetus and placenta. This lead to mild uterine contractions and hence fetal ejection reflex. Then oxytocin acts on uterine muscles leading to strong uterine contractions. This further continues to stronger and stronger contractions. As a result, the baby is expelled out of the uterus with placenta through the birth canal. So, the correct answer is ‘fully developed foetus and placenta’