To determine:
The positive feedback mechanism with one physiological example.
Introduction:
Every organism body performs several chemical and physiological processes, throughout their body. These processes require optimum conditions for efficient working. These conditions are auto regulated by the body, by a process known as homeostasis. Feedback mechanism is one of the l mechanisms involved in “homeostasis”.
To determine:
The reason why positive feedback is rare in the physiological processes.
Introduction:
Feedback mechanism is of two types: negative feedback and positive feedback. Negative feedback slows down the production rate and positive feedback accelerates the production rate.
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Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
- Describe how blood sugar (e.g. glucose plasma concentration) is regulated with the hormones, insulin, and glucagon. For this feedback loop, identify the following components of the feedback loop: stimulus, receptor, control center, efferent pathway, effector, and response. Be comfortable with this feedback loop to be able to describe the effects of changing various components of the feedback loop.arrow_forwardDifferentiate negative from positive feedback mechanism. Give one physiologic example for each mechanismarrow_forwardGive an example of a feedback mechanism in the human body. Explain your example briefly. Make sure to identify the type of feedback (negative or positive), the receptor, the control center and the effector.arrow_forward
- Define homeostasis. What happens when homeostasis fails? List the three basic components of a control system and give an example. Describe the components of a reflex pathway. Contrast the response loop and the feedback loop. Explain the relationship between a regulated physiological variable and its setpoint. Is the physiological variable exactly at its setpoint? Compare and contrast negative and positive feedback. Give a biological example of each. Is the setpoint constant or can it change over time? If setpoints can change over time, what is this called? Chapter 2:arrow_forwardWhat is similar and different about a feedback loop or feedback cycle when describing a physiological process in the body?arrow_forwardDefine homeostasis, and identify the components of negative feedback loops.arrow_forward