Describe negative feedback systems, and provide an example. Describe - ProProfs Discuss
Advertisement

Describe negative feedback systems, and provide an example. Describe positive feedback control systems, and provide an example. Describe adaptive control, and provide an example.



Asked by Erin, Last updated: Apr 11, 2021

+ Answer
Request
Question menu
Vote up Vote down

1 Answer

John Smith

John Smith

John Smith
John Smith

Answered Sep 09, 2016

Negative:- most control systems of the body are negative feedback- a stimulus causes a reaction that opposes the acting stimulus.- ie1: increased co2 increases pulmonary ventilation- ie2: decreased arterial pressure activates baroreceptor system, increases heart rate + arterial constriction- acts to maintain homeostasispositive:- stimulus causes a response that promotes the stimulus- tends towards instability, not used as often- ie1: blood clotting, rupture initiates clot formation, enzyme activation within clot causes other enzymes in blood to clot- ie2: uterine contractions in childbirth- ie3: na+ flux in nerve signal propagation- tends to work with larger negative feedback control system (blood clotting cycle within blood volume nfc)adaptive: - complex systems that change their response each time a stimulus is presented until the proper response is determined- ie1: some body movements require rapid responses that cannot wait for signal transmission to the central nervous system and the subsequent response, so sensory nerve signals from the moving parts transmit signals to the brain as to whether the movement was properly completed. if not, the brain sends signals so that the next response is altered. this continues until the proper response is obtained.
upvote downvote
Reply 

Advertisement
Advertisement
Search for Google images Google Image Icon
Select a recommended image
Upload from your computer Loader
Image Preview
Search for Google images Google Image Icon
Select a recommended image
Upload from your computer Loader
Image Preview
Search for Google images Google Image Icon
Select a recommended image
Upload from your computer Loader

Email Sent
We have sent an email to your address "" with instructions to reset your password.