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How could you describe the positive feedback system that occurs during labor?
Wiki User
∙ 15y ago
The process of labor is induced by the release of the hormone Oxytocin from the pituitary gland. Oxytocin causes smooth muscle contraction associated with the uterus. Uterine contraction in turn causes the release of more Oxytocin from the pituitary, which causes more contraction. this represents a positive feedback loop of increasing amounts of Oxytocin and uterine contraction. Contractions of the uterus of course result in the movement of the fetus out of the birth canal (leaving the uterus, passing through the cervix, and out through the vaginal opening.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoAfter labor begins the baby's head puts pressure on the cervix, causing the cervix to stretch. This stimulates stretch receptors the trigger the mother's hypothalamus to release oxytocin, which increases the uterine contractions and pushes the baby against the cervix. This causes the cervix to stretch farther and the cycle continues.
Now, a positive feedback loop, by definition, is basically a cycle of increasing response. An external factor or event is required for the cycle to stop. In this example, the delivery of the baby is the external event. Once the baby is delivered, the uterine contractions stop, which halts the stretching of the cervix, and oxytocin is no longer released.
If the external factor is not introduced, the cycle continues. The duration of the cycle is what we refer to as labor.
Wiki User
∙ 10y agoIt is a positive feedback mechanism because each contraction stimulates the release of more oxytocin which, in turn, makes the next contraction start sooner and become stronger. Think of it as saying to itself "faster and harder" over and over again as it continues in the same direction it is already going. That is positive feedback because it keeps building. A good example is a sneeze, it just keeps building up until you let it go. As a comparison, negative feedback tells the body process to slow down and change so it goes the opposite direction. AN example of that is getting chilly, and your body wants to get warmer, so it starts shivering to generate more heat.
Wiki User
∙ 13y agoPositive feedback.
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How does negative feedback mechanism and positive feedback differ?
A negative feedback will stabilize an amplifiers positive feed back will force the amplifier to either saturated state. this will hold true for a system too. A more general answer follows. 1. Feedback: Getting information about what just happened and responding to it. 2. Negative Feedback: The response lessens the output. 3. Positive Feedback: The response increases the output.
What is immediate feedback?
immediate feedback occurs when the reactions of the receiver are directly perceived by the source .
What is a control mechanism that responds to a stimulus by decreasing its intensity called?
There are two kinds of feedback in the control of the body. Negative feedback occurs when a change happens in the body that makes the body beyond it's homeostatic level. Negative feedback reverses those changes and returns the body back to it's normal stage. Positive feedback occurs to temporarily amplify or enforce the change that is occurring. This process causes a number of increases until a signal is sent to the brain to stop the process.
How are negative and positive feedback involved in homeostatic regulation?
Negative feedback occurs when the output of a system reacts to cancel out the effects of an input of a system, as opposed to positive feedback (in which the actions/output is intensified or increased). The more negative, the more stable. Thus, with things being canceled out, the body maintains homeostasis. An example of negative feedback in action is the maintenance of blood glucose levels and body temperature. With input of sugar, insulin is released to stabilize the body (on the other hand, without insulin, diabetes can be diagnosed). With a raise in body temperature, blood vessels and pores are opened to release heat.
What is voice feedback?
Voice feedback occurs when the microphone picks up sound from the speakers and 're-transmits' it - forming a feedback loop which is heard as a high-pitched 'squeal'
When bodily changes are detected responses are activated that reverse the change restoring stability and preserving normal body function This occurs during what feedback?
It is NEGATIVE FEEDBACK.
What is type of feedback in which a given action promotes more of the same?
The type of feedback that promotes more of the same action is positive feedback. It occurs when the result or outcome of an action increases the likelihood of that action being repeated or continued. Positive feedback reinforces and encourages the behavior or action that produced it.
Body regulation occurs at 3 levels.localneuralhormonal.in many cases the same result occurs but through a different mechanism.why does this happen and what are some exapmles of other body regulations.?
Negative feedback, positive feedback, and neural control.
What is a positive interaction that occurs during play time between carer and baby?
what is a positive interaction that occurs during the play time between carer and baby
What are four different effects of feedback on the function of an amplifier?
1. Negative feedback can increase linearity at the expense of losing gain. 2. & 3. Positive feedback can result in large increases in gain until the increases becomes so large that oscillation occurs. 4. Positive or negative feedback at one frequency can result in enhanced or decreased response to that frequency.
How does negative feedback mechanism and positive feedback differ?
A negative feedback will stabilize an amplifiers positive feed back will force the amplifier to either saturated state. this will hold true for a system too. A more general answer follows. 1. Feedback: Getting information about what just happened and responding to it. 2. Negative Feedback: The response lessens the output. 3. Positive Feedback: The response increases the output.
What is the word used to describe the physical change that occurs during adolescences?
Puberty.
What is immediate feedback?
immediate feedback occurs when the reactions of the receiver are directly perceived by the source .
What is a control mechanism that responds to a stimulus by decreasing its intensity called?
There are two kinds of feedback in the control of the body. Negative feedback occurs when a change happens in the body that makes the body beyond it's homeostatic level. Negative feedback reverses those changes and returns the body back to it's normal stage. Positive feedback occurs to temporarily amplify or enforce the change that is occurring. This process causes a number of increases until a signal is sent to the brain to stop the process.
What are the condition for oscillation?
There are three conditions. These include positive feedback, the phase near the circuit needs to be either 36 or zero degrees, and the loop gain should be equal or greater than 1.
How are negative and positive feedback involved in homeostatic regulation?
Negative feedback occurs when the output of a system reacts to cancel out the effects of an input of a system, as opposed to positive feedback (in which the actions/output is intensified or increased). The more negative, the more stable. Thus, with things being canceled out, the body maintains homeostasis. An example of negative feedback in action is the maintenance of blood glucose levels and body temperature. With input of sugar, insulin is released to stabilize the body (on the other hand, without insulin, diabetes can be diagnosed). With a raise in body temperature, blood vessels and pores are opened to release heat.
What is voice feedback?
Voice feedback occurs when the microphone picks up sound from the speakers and 're-transmits' it - forming a feedback loop which is heard as a high-pitched 'squeal'
