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Regulation of the release of T3 and T4 from the thyroid gland is controlled by negative feedback?
Wiki User
∙ 13y ago
When the level of the thyroxine increase, the level of the thyroid stimulating hormone decrease. So in turn the level of the thyroid hormone decreases. When the level of the thyroxine decrease, the level of the thyroid stimulating hormone increase. This in turn increase the level of the thyroxine. This explanation does not explain to how the level of the hormone is regulated at that particular level. But then this explanation satisfy most of the people.
June Douglas
Wiki User
∙ 13y agoA certain stimuli (cold or stress) go to the hypothalamus then goes down to the thyroid-stimulating hormone-releasing hormone to the anterior pituitary. Low-level thyroid hormone in blood stimulates the anterior pituitary which activates the thyroid-stimulating hormone, which stimulates the thyroid to the thyroid hormones. The thyroid hormones stimulate metabolism and produce growth. When the level in the blood increases above normal the thyroid hormones inhibit the anterior pituitary. Some inhibition goes to the hypothalamus.
Wiki User
∙ 8y agoWhen the level of the thyroxine increase, the level of the thyroid stimulating hormone decrease. So in turn the level of the thyroid hormone decreases. When the level of the thyroxine decrease, the level of the thyroid stimulating hormone increase. This in turn increase the level of the thyroxine. This explanation does not explain to how the level of the hormone is regulated at that particular level. But then this explanation satisfy most of the people.
Wiki User
∙ 13y agoIt is controlled by negative feedback.
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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.
Is the ADH feedback loop an example of positive or negative feedback explain?
The ADH feedback loop is an example of a negative feedback loop. Negative feedback loops occur when the output of a system acts to oppose the changes to the input of the system. This is the case with ADH because when there is not enough water, the hypothalamus and pituitary gland work to release ADH so that the body can retain more water.
What effect does negative feedback have on homeostasis?
Imagine this process in the body: The brain tells your stomach to release chemical A. Chemical A causes Chemical B to be released. Chemical B has an effect on your body. Chemical B also tells the brain to stop releasing Chemical A. The negative feedback is Chemical B telling the brain to stop. If the brain keeps releasing chemical A, then chemical B will keep being released and do things to your body and it would never stop. This creates an imbalance. Therefore, the end products of any reaction in the body tell the source to
What is the negative feedback mechanism for heart rate regulation?
k so the adrenal medulla which is a gland located on top of your kidneys release these nonpituitary hormones called epinephrine and norepinephrine which helps dilate blood vessels to allow oxygen and glucose to come in. Then your sympathetic nervous system releases even more norepinephrine (this is an example of positive feedback mechanism). So your digestive lining's vessels constrict and no oxygen is there. That's why when ur in fight or flight situations your body stops metabolizing.
Pancreatic enzymes are secreted in response to the hormone?
The nervous and endocrine systems regulate release of pancreatic juice, as they do gastric and small intestinal secretions.
What is a feed Back?
It depends on whether it is positive or negative feedback. Most biological organisms exhibit both negative and positive feedback, including humans. An example of positive feedback is contractions during childbirth. Negative feedback is blood sugar regulation based upon the release of insulin into the bloodstream at necessary times.
What is a biological feed back?
It depends on whether it is positive or negative feedback. Most biological organisms exhibit both negative and positive feedback, including humans. An example of positive feedback is contractions during childbirth. Negative feedback is blood sugar regulation based upon the release of insulin into the bloodstream at necessary times.
Is Oxytocin release a positive or negative feedback control mechanism?
positive
Is the ADH feedback loop an example of positive or negative feedback?
The ADH feedback loop is an example of a negative feedback loop. Negative feedback loops occur when the output of a system acts to oppose the changes to the input of the system. This is the case with ADH because when there is not enough water, the hypothalamus and pituitary gland work to release ADH so that the body can retain more water.
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.
Is the ADH feedback loop an example of positive or negative feedback explain?
The ADH feedback loop is an example of a negative feedback loop. Negative feedback loops occur when the output of a system acts to oppose the changes to the input of the system. This is the case with ADH because when there is not enough water, the hypothalamus and pituitary gland work to release ADH so that the body can retain more water.
How does the endocrines system's negative feedback system work?
Through negative feedback when the amount of a particular hormone in he blood reaches a certain level the endocrine system sends signals that stop the release of hormone.
Hormone concentration levels are most commonly controlled by?
There are three mechanisms which govern hormone release; hormonal, humoral, and neural. Hormonal release means that one hormone will trigger the release of a second hormone. An example of this would be thyroid-releasing hormone from the anterior pituitary causing the release of thyroid hormone from, er, the thyroid. Humoral release is triggered by the presence of certain ions or nutrients in the blood stream. Insulin is an example of humoral release because it is triggered by the presence of glucose in the bloodstream. Finally neural release is a release caused by the nervous system directly. A good example of that would be the release of adrenaline (epinephrine) from the adrenal glands by the sympathetic nervous system.
How does a negative feedback system work explain how negative feedback regulates the amount of thyroxine in the blood?
When the amount of a particular hormone in the blood is reaches a certain level, the endocrine system sends signals to stop the release of that hormone. "Pearson Education Inc."
How does a negative feedback system work and Explain how negative feedback regulates the amount of thyroxine in the blood?
When the amount of a particular hormone in the blood is reaches a certain level, the endocrine system sends signals to stop the release of that hormone. "Pearson Education Inc."
What turns off FSH?
Estrogen production from the Graafian Follicle gradually reduces FSH release from the Anterior Pituitary via negative feedback.
What effect does negative feedback have on homeostasis?
Imagine this process in the body: The brain tells your stomach to release chemical A. Chemical A causes Chemical B to be released. Chemical B has an effect on your body. Chemical B also tells the brain to stop releasing Chemical A. The negative feedback is Chemical B telling the brain to stop. If the brain keeps releasing chemical A, then chemical B will keep being released and do things to your body and it would never stop. This creates an imbalance. Therefore, the end products of any reaction in the body tell the source to
