Question:
Signals for parturition originate from
Signals for parturition originate from
Updated On: Jul 28, 2022
- Fully developed foetus only
- Placenta only
- Oxytocin released by maternal pituitary
- Both placenta as well as fully developed foetus
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The Correct Option is D
Solution and Explanation
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.
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Concepts Used:
Parturition and Lactation
Parturition:
It is the process of the contraction of the uterus at regular intervals that helps in the delivery of the baby at the end of pregnancy. The signals that the fully developed fetus sends through the placenta for ejection is called Foetal ejection reflex. These signals induce muscular contractions.
The time period from fertilization to childbirth is called the gestation period.
Lactation:
It is the process of production of milk by the mammary glands at the end of pregnancy. The milk produced initially by the glands is called colostrum. This milk is crucial for the baby as it provides the child with initial immunity.