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Which of these is not an important component of initiation of parturition in humans?
- a)Release of Prolactin
- b)Increase in estrogen and progesterone ratio
- c)Synthesis of prostaglandins
- d)Release of Oxytocin
Correct answer is option 'A'. Can you explain this answer?
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Which of these is not an important component of initiation of parturit...
Release of Prolactin is not an important component of initiation of parturition in humans.
- At the end of gestation, the completely developed foetus is expelled out. This process is called parturition.
- Parturition is controlled by a complex neuroendocrine mechanism.
- Estrogen and progesterone ratio increases as estrogen levels rise significantly.
- Prostaglandins, which stimulate uterine contractions are also produced that act on myometrium.
- Oxytocin, the main hormone, also called as birth hormone is released by maternal pituitary, which brings about strong uterine contractions.
- Prolactin is a lactation hormone that has no role in initiation of parturition.
Hence, the correct option is (A).
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Which of these is not an important component of initiation of parturit...
Initiation of Parturition in Humans
Parturition or childbirth is the process of delivering a baby from the uterus. The initiation of parturition in humans involves several important components. Let's discuss them in detail.
Increase in Estrogen and Progesterone Ratio
During pregnancy, the placenta produces large amounts of estrogen and progesterone hormones. These hormones help in maintaining the pregnancy and inhibiting contractions of the uterus. However, as the pregnancy nears its end, the ratio of estrogen to progesterone increases, which triggers the onset of labor.
Synthesis of Prostaglandins
Prostaglandins are hormones that are produced by the uterus and fetal membranes during pregnancy. These hormones play a crucial role in the initiation of labor by causing contractions of the uterus and softening of the cervix.
Release of Oxytocin
Oxytocin is a hormone that is produced by the pituitary gland in response to fetal signals. This hormone stimulates the uterine contractions during labor and helps in the delivery of the baby.
Release of Prolactin
Prolactin is a hormone that is mainly responsible for milk production in the breast tissue. Although it is not directly involved in the initiation of labor, it plays a role in postpartum milk production and lactation.
Conclusion
Therefore, the correct answer to the given question is option A, release of prolactin. While prolactin is an important hormone for lactation, it is not directly involved in the initiation of labor. The other three components, i.e., increase in estrogen and progesterone ratio, synthesis of prostaglandins, and release of oxytocin, play a crucial role in the initiation of parturition in humans.
Parturition or childbirth is the process of delivering a baby from the uterus. The initiation of parturition in humans involves several important components. Let's discuss them in detail.
Increase in Estrogen and Progesterone Ratio
During pregnancy, the placenta produces large amounts of estrogen and progesterone hormones. These hormones help in maintaining the pregnancy and inhibiting contractions of the uterus. However, as the pregnancy nears its end, the ratio of estrogen to progesterone increases, which triggers the onset of labor.
Synthesis of Prostaglandins
Prostaglandins are hormones that are produced by the uterus and fetal membranes during pregnancy. These hormones play a crucial role in the initiation of labor by causing contractions of the uterus and softening of the cervix.
Release of Oxytocin
Oxytocin is a hormone that is produced by the pituitary gland in response to fetal signals. This hormone stimulates the uterine contractions during labor and helps in the delivery of the baby.
Release of Prolactin
Prolactin is a hormone that is mainly responsible for milk production in the breast tissue. Although it is not directly involved in the initiation of labor, it plays a role in postpartum milk production and lactation.
Conclusion
Therefore, the correct answer to the given question is option A, release of prolactin. While prolactin is an important hormone for lactation, it is not directly involved in the initiation of labor. The other three components, i.e., increase in estrogen and progesterone ratio, synthesis of prostaglandins, and release of oxytocin, play a crucial role in the initiation of parturition in humans.
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Which of these is not an important component of initiation of parturition in humans?a)Release of Prolactinb)Increase in estrogen and progesterone ratioc)Synthesis of prostaglandinsd)Release of OxytocinCorrect answer is option 'A'. Can you explain this answer?
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