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प्रश्न
Explain the role of oxytocin and relaxin in parturition and lactation.
उत्तर
Role of oxytocin and relaxin in parturition and lactation:
- Relaxin is the hormone secreted by the placenta that causes the contraction of pelvic joints and promotes parturition (child birth).
- Oxytocin causes the Let-down reflex – the actual ejection of milk from the alveoli of mammary glands. Oxytocin also stimulates the uterus to regain its pre-pregnancy size after childbirth.
संबंधित प्रश्न
Describe the process of Parturition in humans.
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 __________.
The milk secreted by the mammary glands soon after childbirth is called ____________.
What is colostrum? Write its significance.
Cells become variable in morphology and function in different regions of the embryo. The process is ______.
In human adult females oxytocin ______.
The third stage of parturition is called “after-birth”. In this stage ______.
Oxytocin, necessary for parturition, is secreted by the fully-developed foetus and the placenta.
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.
During parturition, a pregnant woman is having prolonged labour pains, and childbirth has to be fastened. It is advisable to administer a hormone that can ______
The signals for the parturition process originate from ______
Paturition is induced by a complex
Which of these is not an important component of initiation of parturition in humans?
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?
