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- 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.
What else can I help you with?
Is gonadotropin negative feedback or positive feedback?
Gonadotropin release is primarily regulated by negative feedback mechanisms. In both males and females, sex hormones (like testosterone and estrogen) inhibit the secretion of gonadotropin-releasing hormone (GnRH) from the hypothalamus and luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland. However, during specific phases of the menstrual cycle, estrogen can induce a positive feedback loop leading to a surge in LH, which triggers ovulation. Overall, the predominant regulatory mechanism for gonadotropin is negative feedback.
Does the endocrine system often run on negative feed back?
Endocrine system usually uses the negative feed back mechanism. So suppose when thyroid stimulating hormone is released, then thyroid hormones are released. They reduce the secretion of thyroid stimulating hormone. This is how the secretions of the hormones is regulated. In positive feed back mechanism, the level of both the hormones will raise and will create lot of problems.
How Hormones and feedback mechanism in the same sentence?
Hormones are chemical messengers produced by glands in the endocrine system that regulate various physiological processes, while feedback mechanisms are regulatory systems that monitor hormone levels and physiological conditions to maintain homeostasis. In a feedback mechanism, elevated hormone levels may inhibit further hormone production (negative feedback), whereas low levels may stimulate hormone release (positive feedback). This interplay ensures that bodily functions remain balanced and responsive to internal and external changes.
Is a control mechanism that intensifies an earlier reaction A sensory receptor An effector Negative feedback Positive feedback?
sensory receptor
What body system is regulated by feedback mechanism?
The endocrine system is primarily regulated by feedback mechanisms, particularly through negative feedback loops. These loops help maintain homeostasis by adjusting hormone levels in response to changes in the body. For example, when hormone levels rise above a certain threshold, the endocrine system can inhibit further production, ensuring balance. Positive feedback mechanisms also occur, but they are less common and typically involved in processes like childbirth.
Is chain of command a least common way that hormones are regulated?
No, the chain of command is not the least common way hormones are regulated. Hormonal regulation often involves complex feedback systems, including negative and positive feedback loops. Additionally, hormones can be regulated through various mechanisms such as neural control, humoral control, and interactions with other hormones, making the chain of command just one of several regulatory pathways.
When the initial stimulus produces a response that reinforces the stimulus the mechanism is called?
positive feedback
Are contractions in the uterus a process regulated by negative or positive feedback?
Uterine contractions are one of the few physiologic process regulated by positive feedback.
Positive feedback differs from negative feedback in that?
Most of the mechanisms in our body are regulated by negative feedback inhibition. In this type of process, the end product shuts off or reduces the intensity of the original stimulus. Production of certain hormones when mother is giving birth to a child is regulated by positive feedback inhibition. In this type of process, response leads to an even greater response.
What are the hormonal responses and describe them?
The hormonal responses are basically responses or reactions given by the hormones. This response is triggered by either negative or positive feedback mechanism. When the hormone level is too low, the gland (usually endocrine) releases the hormones into the bloodstreams where it travels until it reaches the target organ. When there are too much hormones, the gland is triggered to stop the release of hormones. This mechanism of maintaining the balance without giving excess amount of hormone is known as negative feedback. In a positive feedback, the gland is triggered to release more hormones when excess amount of hormones is present.
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 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.
Is gonadotropin negative feedback or positive feedback?
Gonadotropin release is primarily regulated by negative feedback mechanisms. In both males and females, sex hormones (like testosterone and estrogen) inhibit the secretion of gonadotropin-releasing hormone (GnRH) from the hypothalamus and luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland. However, during specific phases of the menstrual cycle, estrogen can induce a positive feedback loop leading to a surge in LH, which triggers ovulation. Overall, the predominant regulatory mechanism for gonadotropin is negative feedback.
Is blood calcium level a positive or negative feedback mechanism?
positive
Does the endocrine system often run on negative feed back?
Endocrine system usually uses the negative feed back mechanism. So suppose when thyroid stimulating hormone is released, then thyroid hormones are released. They reduce the secretion of thyroid stimulating hormone. This is how the secretions of the hormones is regulated. In positive feed back mechanism, the level of both the hormones will raise and will create lot of problems.
Is blood regulated by negative or positive feedback?
negative feedback via baroreceptors in the carotid artery and aortic arch
How Hormones and feedback mechanism in the same sentence?
Hormones are chemical messengers produced by glands in the endocrine system that regulate various physiological processes, while feedback mechanisms are regulatory systems that monitor hormone levels and physiological conditions to maintain homeostasis. In a feedback mechanism, elevated hormone levels may inhibit further hormone production (negative feedback), whereas low levels may stimulate hormone release (positive feedback). This interplay ensures that bodily functions remain balanced and responsive to internal and external changes.
