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29. a) Why is oxytocin necessary for Parturition?
b) List any four hormones secreted by Placenta.

Ans:

a) Oxytocin acts on the uterine muscle and causes stronger uterine contractions. This leads to expulsion of the baby out of the uterus through the birth canal – parturition.


b) Human chorionic gonadotropin (hCG), human placental lactogen (hPL), oestrogen, progesterone that are essential to maintain pregnancy.

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