Question
Biology Question on Parturition And Lactation
Signals for parturition originate from
A
Fully developed foetus only
B
Placenta only
C
Oxytocin released by maternal pituitary
D
Both placenta as well as fully developed foetus
Answer
Both placenta as well as fully developed foetus
Explanation
Solution
The act of expelling the full term young one from the mother's uterus at the end of gestation period is called parturition. Parturition is induced by signals from both the fully developed foetus and the placenta. It induces mild uterine contractions called foetal ejection reflex.