This video is about homeostasis, it's types, mechanism and examples. Your Queries:- Homeostasis Homeostasis Animation Negative feedback mechanism Positive feedback mechanism What is homeostasis Homeostasis in the human body Homeostasis mechanism Homeostasis positive and negative feedback Homeostasis anatomy and physiology Homeostasis in the human body definition Homeostasis introduction Examples of Homeostasis Concept of Homeostasis CONTENT OF THIS SLIDE: INTRODUCTION All different bodily cells work together for proper functioning. Maintaining a constant internal environment – by providing the cells with what they need to survive (oxygen, nutrients, and removal of waste) – is necessary for the well-being of individual cells and of the entire body.  The many processes by which the body controls its internal environment are collectively called homeostasis.  Homeostasis The tendency to maintain a stable, relatively constant internal environment is called homeostasis. Simply, homeostasis refers to the body or cells’ internal: Stability Balance Equilibrium EXAMPLES Body’s Temperature 35o - 41.7oc Average: 37oc Stomach’s pH Acidic Concentration of various ions and molecules i.e.: glucose, Na/Cl IMPORTANCE Required to maintain a stable internal environment By constant adjustments - as conditions change inside and outside of the cell. Makes the maintenance of homeostasis, a complementary activity of body and an important characteristic of living things. Adjustment of systems within a cell is called HOMEOSTATIC REGULATION. Must be made continuously – because the internal and external environments of a cell are changing continuously Adjusted to stay at/near the set point (the normal level or range). That’s why homeostasis can be thought of as a DYNAMIC EQUILIBRIUM. TYPES MECHANISM Feedback Regulation Loop A physiological regulation system in a living body that works to return the body to its normal internal state in a continuous dynamic manner. Working Feedback regulation occurs by responding to a stimulus in such a way that it has an effect of some kind on the original stimulus. The type of response determines what the feedback is called. Negative feedback occurs when the response to a stimulus reduces the original stimulus.  Positive feedback occurs when the response to a stimulus increases the original stimulus. Example Thermoregulation: Body temperature rises above set point (i.e., exercise) Body’s nervous system will activate the mechanisms to cool it down Blood flow to the skin increases – to speed up heat loss into surroundings Skin’s sweat glands activation – to start evaporation for cooling Heavy breathing – to increase heat loss. ORGAN SYSTEMS INVOLVED Organ System Involved DISRUPTION TO HOMEOSTASIS Anything that interferes with the feedback mechanisms will disrupt the homeostasis. A disruption within one system generally has consequences for several additional body systems

1. HOMEOSTASIS

2. INTRODUCTION

4. Homeostasis
The tendency to maintain a
stable, relatively constant
internal environment is
called homeostasis.

6. EXAMPLES

7. Body’s Temperature
• 35o - 41.7oc
• Average: 37oc
Stomach’s pH
• Acidic
Concentration of various ions
and molecules
• i.e.: glucose, Na/Cl

8. IMPORTANCE

9. • Required to maintain a stable
internal environment
• By constant adjustments - as
conditions change inside and
outside of the cell.
• Makes the maintenance of
homeostasis, a complementary
activity of body and an important
characteristic of living things.

10. • Adjustment of systems within a cell is
called HOMEOSTATIC REGULATION.
• Must be made continuously –
because the internal and external
environments of a cell are changing
continuously
• Adjusted to stay at/near the set point
(the normal level or range).
• That’s why homeostasis can be
thought of as a DYNAMIC
EQUILIBRIUM.

11. TYPES

12. Thermoregulation
•Regulation of body
temperature
•Mainly done by the
skin
Osmoregulation
•Regulation of the
amounts of water
and minerals in the
body
•Primarily done by
the kidneys
Excretion
•Removal of
metabolic waste
•Done by the
excretory organs
such as the kidneys
and lungs
Chemical
Regulation
•Regulation of bodily
chemical and
molecules
•Mainly done by the
liver

13. MECHANISM

14. Feedback Regulation Loop

15. Feedback >>
Response
Regulation >>
Homeostatic
regulations
Loop >>
Continuous
cycle/loop

16. Feedback
Regulation
Loop
A physiological
regulation system in a
living body that works
to return the body to its
normal internal state in
a continuous dynamic
manner.

17. Working

18. Example
Thermoregulation:
• Body temperature rises above set point (i.e., exercise)
• Body’s nervous system will activate the mechanisms to
cool it down
– Blood flow to the skin increases – to speed up heat
loss into surroundings
– Skin’s sweat glands activation – to start evaporation
for cooling
– Heavy breathing – to increase heat loss.

19. ORGAN
SYSTEMS
INVOLVED

20. Organ System Involved
Plays a vital role in homeostasis
Gathers information from the body's
receptors, processes it, and sends
appropriate signals to effectors
Nervous system
Includes glands that secretes
hormones as chemical messengers
Endocrine System
Fluid balance (correct salt and water
content)
Get rids the body of toxic body wastes
Maintains proper blood volume
Urinary System
Gas exchange
Respiratory System
Maintains blood pressure
Cardiovascular System

21. DISRUPTION TO HOMEOSTASIS

22. • Anything that interferes with the feedback
mechanisms will disrupt the homeostasis.
• A disruption within one system generally has
consequences for several additional body
systems.
• In the case of the human body, this may lead
to disease.
• Conditions like diabetes, hypertension, and
acid-base imbalances are examples of
disruptions to homeostasis.

23. ADAPTATIONS
FOR
HOMEOSTASIS

25. Remember
Balance is the key to
a healthy life.