Describe distrustful and positive feedback loops, and discuss how feedback mechanism regulate respectively of the follow
- The menstrual cycle surrounded by a nonpregnant human female.
- Blood glucose level in human.
Negative feedback loops ensue when the substrate cause a diminution in the hormone to be precise stimulating it keeping the substrate at a constant or near constant stratum. For example estrogen and FSH. This can also happen if the substrate increases the hormone which regulates its excretion. For example calcium and calcitonin or glucose and insulin.
Positive feedback loops go off when the stimulus or substrate amplifies the response causing an increae fairly than a decrease contained by the level of substrate. One example of a biological positive feedback loop is the birth of contractions in childbirth. When a contraction occur, the hormone oxytocin is released into the body, which stimulates furthur contractions. This results in contractions increasing contained by amplitude and frequency. Another example of a biological positive feedback loop is the process of blood clotting. The loop is initiated when injured tissue releases signal chemicals which activate platelets within the blood. An activated platelet releases chemicals which produce more platelets, causing a fast cascade and the formation of a blood clot.
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