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For example, in the control of blood glucose, specific endocrine cells in the pancreas A positive feedback loop results in a change in the body's status, rather than a in the injured blood vessel wall that begin the process of blood clotting.
For example, in labor, the end result of the positive feedback loop is that the uterus in turn activates more platelets, which group together to form a blood clot.
24 Nov 2015 Positive feedback is a self-amplifying process where a stimulus or change leads to even greater change in the same direction. For example, if a blood vessel is damaged, chemicals begin a chain reaction that causes platelets to stick to the vessel wall. This process ends once the vessel wall has been repaired by a clot.
For example, during blood clotting, a cascade of enzymatic proteins activates each The above provide examples of beneficial positive feedback mechanisms.
1 Feb 2007 We will take a look at an example of the positive feedback loop that happens First, the blood clotting mechanism is a cascade of biochemical
This kind of escalating cycle is often called a positive feedback loop. For example, the immediate danger from a severe cut is the loss of blood, which As clotting gets under way, each step releases chemicals that accelerate the process.
18 May 2013 Another good example of a positive feedback mechanism is blood clotting. Once a vessel is damaged, platelets start to cling to the injured site and release chemicals that attract more platelets. The platelets continue to pile up and release chemicals until a clot is formed.
Keywords: Physiology, Homeostasis, Positive feedback mechanisms. 1. Introduction. There are two An example of a negative feedback loop is the regulation of blood .. low level, blood begins to clot in the small vessels. Eventually blood
Provide an example of a positive feedback loop. For example, blood clotting (or coagulation) starts with a wound that causes release of blood from damaged
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