Feedback mechanism of metabolism (Positive and Negative feedback mechanism) How Positive and Negative feedback mechanism maintained homeostasis in body

1. Feedback Mechanism Of Metabolism
BY:
RASHID KHAN
F2017067044

2. CONTENTS
 Introduction
 History
 Definition
 Feedback Mechanisms
 Positive Feedback Mechanism
 Negative Feedback Mechanism
 Conculation

3. Introduction
Metabolism is a set of chemical reactions that
interconnect in a series of pathways. It is a balancing
act between the building and breakdown of molecules
in the body.
Type of metabolism
Anabolism
Catabolism

4. History
The term metabolism is derived from the Greek
Metabolismos. "Metabolismos" for "change", or "overthrow".
Feedback Mechanisms
 Why do organisms use the feedback mechanism?
The body uses feedback mechanisms to monitor and maintain our
physiological activities. Based on the outcome, it decides whether it
should continue performing a specific action, or if it should stop the
action. This is called a feedback mechanism.
 Do plants use the feedback mechanisms?

5. Types Of Feedback Mechanisms
 Positive Feedback Mechanism
 Negative Feedback Mechanism
Positive Feedback Mechanism
In a positive feedback system, the output enhances the original stimulus. A
positive feedback is one that which responds to the perturbation in the same
direction as the perturbation. It tends to initiate or accelerate a biological process.
How body maintain homeostasis?

6. Examples
One common example of a
positive feedback system in
living things is blood clotting.
When skin is cut and a blood
vessel experiences is blood
clotting.
Blood clotting

7. Digestion
One common example
of a positive feedback
system in living things is
digestion

8. The suckling action of an
infant produces prolactin,
which leads to milk
production
Lactation

9. Child Birth
Positive feedback
mechanism during
child birth in
humans

10. Negative Feedback Mechanism
In negative feedback, the body works to correct a deviation from a set point, it
tries to get back to normal.
Examples
One common example of a negative
feedback system in living things is
Increase in body temperature

11. How body maintain our
blood sugar level if it
increase or decrease by
negative feedback
mechanism?
Blood Sugar Level

12. How body maintain
our Blood pressure
if it increase or
decrease by feedback
mechanism?
Blood Pressure

13. Sensation
How body
maintain our
Sensation
by feedback
mechanism?

14. Metabolic pathways are a series of reactions catalyzed by multiple enzymes.
Feedback inhibition, where the end product of the pathway inhibits an upstream
process, is an important regulatory mechanism in cells
Conclusion
References
https://www.scienceabc.com/humans/feedback-mechanism-what-are-positive-negative-feedback-
mechanisms.html
https://bio.libretexts.org/Bookshelves/Human_Biology/Book%3A_Human_Biology_(Wakim_and_Grewal)/1
0%3A_Introduction_to_the_Human_Body/10.7%3A_Homeostasis_and_Feedback
https://biologydictionary.net/positive-feedback/
https://openoregon.pressbooks.pub/mhccmajorsbio/chapter/6-7-feedback-inhibition-in-metabolic-
pathways/#:~:text=Principles%20of%20Biology-
,Feedback%20Inhibition%20in%20Metabolic%20Pathways,enzyme%20function%20in%20many%20ways.&te
xt=Figure%2011%20Metabolic%20pathways%20are,important%20regulatory%20mechanism%20in%20cells.