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Question
Describe the process of Parturition in humans.
Solution
At the end of an average 9 months of gestation, vigorous uterine contractions lead to the delivery of the foetus. This process is called parturition.
Parturition is a neuroendocrine mechanism and is started by the signals from the fully developed foetus and the placenta, which produce the foetal ejection reflex.
This causes release of oxytocin from posterior pituitary, which in turn causes even stronger uterine contractions.
Contraction of uterine muscles leads to the expulsion of the baby along with the placenta, and hence completes the process of parturition.
RELATED QUESTIONS
Give a scientific term for the following:
An act of expelling the full-term foetus from mother’s uterus at the end of gestation.
The following question(s)/statement(s) has four suggested answers. Choose the correct option in the following case.
The act of expelling the full-term foetus from the uterus is termed as __________.
Explain the role of oxytocin and relaxin in parturition and lactation.
The signals for parturition originate from ______.
Assertion: Parturition is induced by complex neuroendocrine mechanisms.
Reason: At the end of the gestation period, the maternal pituitary releases prolactin which causes uterine contractions.
Which complex of hormones induces lactation?
Paturition is induced by a complex
Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?
From where the parturition signals arise-mother or foetus? Mention the main hormone involved in parturition.
What is foetal ejection reflex? Explain how it leads to parturition?
