Question

The signals for parturition originate from

• A. Placenta only
• B. Placenta as well as fully developed foetus
• C. Oxytocin released from maternal pituitary
• D. Fully developed foetus only

Answer 1

The correct option is B Placenta as well as fully developed foetus

Parturition is the process of giving the birth to young ones. When foetus become fully developed then the signals originate from placenta and foetus which induce the uterine wall contraction. Uterine contractions give the signals to the maternal pituitary gland to release the oxytocin hormone. Oxytocin induces the uterine contractions vigorously so, the foetus pushed outside.

So, the correct answer is ' Placenta as well as the fully developed foetus '.