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Oxytocin release is a positive feedback control mechanism. This means that an initial stimulus triggers the release of oxytocin, which then promotes further release of oxytocin, amplifying the response until a specific outcome is achieved, such as uterine contractions during childbirth.
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How is the level of oxytocin controlled by a positive-feedback mechanism?
Oxytocin release is controlled by a positive-feedback mechanism during childbirth. When contractions of the uterus stimulate oxytocin release, this hormone further intensifies contractions, leading to more oxytocin release. This cycle continues until the baby is delivered.
Is it true oxytocin release is an example of a positive feedback control mechanism?
Yes, oxytocin release is an example of a positive feedback control mechanism. In response to stimuli such as childbirth or breastfeeding, oxytocin is released, which leads to stronger contractions in the uterus or milk let-down reflex, further stimulating more oxytocin release. This cycle reinforces and amplifies the initial stimulus.
Is a control mechanism that intensifies an earlier reaction A sensory receptor An effector Negative feedback Positive feedback?
sensory receptor
What are two types of feedback mechanisms found in living organisms?
Positive feedback amplifies a response in the same direction, such as the release of oxytocin during childbirth. Negative feedback regulates a response by counteracting changes, like temperature regulation in the body.
Which hormones is regulated by a positive feedback mechanism?
Best example of positive feedback is the release of oxytocin during childbirth. Oxytocin is a reproductive hormone in females. Though it is also secreted in males, its function is yet unclear. Secretion of oxytocin occurs in response to nervous stimulation of the hypothalamus. It stimulates and enhances labor contractions. During the movement of the baby towards the birth canal, messages from pressure receptors within the cervix reach the brain to produce oxytocin. Released oxytocin travels to the uterus through the bloodstream and stimulates the uterine wall muscles to contract stronger. These contractions intensify gradually and increase until the baby comes out of the birth canal.Labor contractions are stopped when the stimulus to the pressure receptors ends and when oxytocin production stops in turn. Another means of oxytocin release is during lactation where the nipple sends impulses to the hypothalamus upon suckling, leading to contraction of the myoepithelial cells and expulsion of milk under positive feedback control.
How is the level of oxytocin controlled by a positive-feedback mechanism?
Oxytocin release is controlled by a positive-feedback mechanism during childbirth. When contractions of the uterus stimulate oxytocin release, this hormone further intensifies contractions, leading to more oxytocin release. This cycle continues until the baby is delivered.
Is oxytocin an adenohypophyseal secretion?
no, it's release is the effect of a positive control feedback mechanism
Is it true oxytocin release is an example of a positive feedback control mechanism?
Yes, oxytocin release is an example of a positive feedback control mechanism. In response to stimuli such as childbirth or breastfeeding, oxytocin is released, which leads to stronger contractions in the uterus or milk let-down reflex, further stimulating more oxytocin release. This cycle reinforces and amplifies the initial stimulus.
Is blood calcium level a positive or negative feedback mechanism?
positive
Is a control mechanism that intensifies an earlier reaction A sensory receptor An effector Negative feedback Positive feedback?
sensory receptor
What is a positive feedback mechanism?
A positive feedback mechanism is a system the responds to perturbation in the same direction as the perturbation. A positive feedback mechanism allow cells to adapt to changes in their environment rapidly and efficiently. Positive feedback allows cells to reach new levels of equilibrium corresponding to the stimulus in the environment
What are two types of feedback mechanisms found in living organisms?
Positive feedback amplifies a response in the same direction, such as the release of oxytocin during childbirth. Negative feedback regulates a response by counteracting changes, like temperature regulation in the body.
Is negative feed back the primary homeostatic mechanism that keeps a variable close to a particular value?
Yes. Negative feedback reacts to a variance by opposing it. (ie. Your body has low [O2], so you increase respiratory rate which does the opposite, pushing up your [O2]) Positive feedback is rare and reacts to a variance by supporting it. (eg. In childbirth a woman's cervix expands and her body releases Oxytocin, due to the high levels of Oxytocin the cervix can expand further which releases more Oxytocin.)
Is blood pressure negative or positive feedback?
Is the clotting of blood an example of positive or negative feedback?
What is positive mechanism involving oxytocin?
Hormonal induction of labor
What hormones are regulated by positive feedback under certain circumstances?
Oxytocin in the process of giving birth. Oxytocin causes uterine contraction, which causes the baby to push up against the cervix, which causes more oxytocin to be released. And the cycle continues until the baby is born.
When the initial stimulus produces a response that reinforces the stimulus the mechanism is called?
positive feedback mechanism.
