Short Note: Homeostasis [Feb held March 2020, April 2018, Feb held April 2015] Define homeostasis. Discuss the homeostatic control mechanism [August held November 2016] 🔗Looking to support our educational work? Donate here: https://forms.gle/1gJexV9UfvMdykfE6 🔗 Click here to watch the full playlist: https://www.youtube.com/playlist?list=PLoMM6M7jRBIhuyq98aDKY7y6d2Bp1A0cB 🔗 Like my Facebook page: https://www.facebook.com/pksLectures 🔗 Subscribe to my channel: https://www.youtube.com/pkslectures 🔗 Follow me on Twitter: https://twitter.com/P_K_Sarker 🔗 Follow me on Instagram: https://www.instagram.com/partha_kumer_sarker/?hl=en 🔗 Follow me on Linkedin: https://www.linkedin.com/in/parthakumersarker/ 🔗 Email: parthakumersarker@gmail.com 🔗 For any help: https://www.facebook.com/ParthaKumerSarker 👍 Thank You :) #PKS_Lectures #BPT_Tutorials Don’t forget to subscribe to the channel if you love medical science and enjoy our video.

1. GENERAL
PHYSIOLOGY
PKS Lectures

2. Questions
•Short Note: Homeostasis
•Define homeostasis. Discuss the
homeostatic control mechanism.
PKS Lectures

3. Homeostasis
Definition: Maintenance of nearly constant conditions in the
internal environment.
Essentially all organs and tissues of the body perform functions that help maintain these
constant conditions. For instance-
 the lungs provide oxygen to the extracellular fluid to replenish the oxygen used by the
cells,
 the kidneys maintain constant ion concentrations, and
 the gastrointestinal system provides nutrients.
[Ref-Guyton & Hall/12th /4]
PKS Lectures

4. Discuss the homeostatic control mechanism?
PKS Lectures

5. Homeostatic control mechanism:
Essentially all organs and tissues of the body perform functions that help maintain
homeostasis. For instance, the lungs provide oxygen to the extracellular fluid to
replenish the oxygen used by the cells, the kidneys maintain constant ion
concentrations, and the gastrointestinal system provides nutrients.
The human body has thousands of control systems in it. The most intricate of these
are the genetic control systems that operate in all cells to help control intracellular
function as well as extracellular function.
Many other control systems operate within the organs to control functions of the
individual parts of the organs; others operate throughout the entire body to control
the interrelations between the organs.
Most control systems of the body act by negative feedback, which consists of a
series of changes that return the factor toward a certain mean value, thus
maintaining homeostasis.
[Ref- Guyton & Hall/ 12th/4 to 7]
PKS Lectures