This mechanism has positive correlation between the products and the process. The positive feedback mechanism result in the growth of a product. This mechanism is less common in organism and perform under specific conditions. Example: Process of blood clotting involves positive feedback mechanism.
Negative feed back mechanism:
This mechanism has negative correlation between the products and the process. Negative feedback mechanism result in the inhibition of the product. This mechanism is more common in organism and maintains homeostasis in the body.Example: Regulation of blood pressure involves negative feedback mechanism.
Positive and negative feedback mechanisms are means by which Earth’s systems interact. Positive feedback involves an increase in the first variable leading to an increase in subsequent variables that ultimately leads to a greater increase in the first variable. Negative feedback involves an increase in the first variable, leading to an increase in subsequent variables that ultimately leads to a decrease in the first variable. Positive feedback speeds up the process and leads to instability. Negative feedback reduces changes in the system and helps to stabilize it.
It rains or snows outside (precipitation) Water that forms from a mixture of heat and cold (condensation) The sun heats up the water and it turns to vapors and goes into the air (Evaporation)
The 85-year old female patient who presents to the emergency department (ed) with increasing shortness of breath, hypoxia, productive cough, and progressive weakness will be assessed and diagnosed by the nurse as someone who is probably having asthma. The mentioned symptoms are common with people who have asthma.
