| Direction: Read the following and answer the questions from given below |
| Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation. |
| (ii) Signals for parturition originate from |
A) both placenta as well as fully developed foetus
B) oxytocin released from maternal pituitary
C) placenta
D) fully developed foetus
Correct Answer: A
Solution :
[a] The signals for parturition originate from the fully developed foetus and also from the placenta which induces mild uterine contractions called foetal-ejection reflex.
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