Question

Read following statements (a-d) and choose the option with only correct statements.
a. Parturition occurs due to a complex neuroendocrine mechanism at the end of gestation period.
b. The signals for parturition originate from fully developed foetus and placenta which induces mild uterine contraction.
c. Foetal ejection reflex triggers release of oxytocin from foetal pituitary.
d. Oxytocin reduces uterine contraction under positive feedback control and causes expulsion of placenta followed by foetus known as parturition.
1.a and b
2.b and c
3.cand d
4.a and d​

Answer 1

Answer:

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 Oxycontin is released from maternal pituitary and it 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 option is 'Both A and B'.

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