Tuesday, April 7, 2015

What is feedback inibition and when does it occur?

What is feedback inibition and when does it occur?
Feedback inhibition is when a substance (usually an enzyme) is released by a particular organ to 'feed-back' to another organ and prevent it producing a particular product or cause it to release more of the product.It occurs in many different systems and organs in the body. It is better understood with use of an example.A simple example is how if an individual is dehydrated and needs to conserve more water then the tubular section of the nephron within the kidney will produce an enzyme that will 'feed back' and causes the secretion of anti-diuretic hormone by the hypothalamus in the brain and water is conserved (more concentrated urine is eliminated)

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