A 30 Year old pregnant lady went into active stage of labour, during this stage oxytocin is released from the posterior pituitary to cause the diltation of cervix. Which one of the following feedback mechanism is responsible for further release of oxytocin and delivery of baby in this patient:Select one:a. Positive feedbackb. Negative feedbackc. Adaptived. Feed forwardClear my choice
Question
A 30 Year old pregnant lady went into active stage of labour, during this stage oxytocin is released from the posterior pituitary to cause the diltation of cervix. Which one of the following feedback mechanism is responsible for further release of oxytocin and delivery of baby in this patient:Select one:a. Positive feedbackb. Negative feedbackc. Adaptived. Feed forwardClear my choice
Solution
The correct answer is a. Positive feedback.
Here's why:
During childbirth, the pressure of the baby against the cervix stimulates the release of oxytocin from the posterior pituitary gland. This oxytocin causes the uterus to contract and push the baby further against the cervix, which in turn stimulates the release of more oxytocin. This cycle continues, with the intensity of the contractions increasing, until the baby is delivered.
This is an example of a positive feedback loop because the output (oxytocin release and uterine contractions) enhances or amplifies the original stimulus (pressure of the baby against the cervix).
Negative feedback, on the other hand, works to reduce or inhibit the original stimulus. Adaptive feedback involves changes over time in response to an environment or situation, and feed forward mechanisms involve anticipatory responses to expected future events. Neither of these apply to the process of childbirth.
Similar Questions
Which of the following is not true of oxytocin?Group of answer choicesOxytocin is produced in the posterior pituitary gland.Oxytocin causes the contractions of the uterus during labor.Oxytocin is one of the few hormones that is regulated by a positive feedback loop.Oxytocin stimulates “milk letdown” in nursing mothers.
Oxytocin is a hormone that causes the muscles in the uterus to contract. These contractions help a pregnant woman deliver her baby. Which of the following systems are involved in this scenario?
Why is oxytocin administered to women during childbirth?Multiple ChoiceTo stimulate ACTH productionTo stimulate uterine contractionsTo inhibit uterine contractionsTo inhibit milk production
Signals for parturition originate fromA) Both placenta as well as fully developed foetusB) Oxytocin released from maternal pituitaryC) Placenta onlyD) The fully developed foetus only
Antidiuretic hormone and oxytocin are both stored in the and released in response to appropriate stimuli.
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