It is the body’s ability to maintain relatively stable internal conditions even the outside environment or world is constantly changing.

unchanging

the same

Homeostasis indicates a dynamic state of equilibrium or balance.

Homeostasis indicates a dynamic state of equilibrium or unstableness.

In homeostasis, internal conditions change but managed to adjust within normal limits.

These are responsible in maintaining equilibrium by doing their respective functions.

All homeostatic control mechanism have at least three components:

It is a type of sensor that monitors and responds to changes in the environment.

It is very sensitive to change

The information flows from the ________ – control center – afferent pathway.

It determines the level or set point at which a variable is to be maintained.

It analyzes information it receives

Determines the appropriate response or course of action.

Provides the means for the control center’s response (output) to the stimulus.

Information flows from the control center – _________ – efferent pathway.

It will reduce the amount of change (negative feedback).

It will increase the amount of change (positive feedback)

Most homeostatic control mechanism are ________ feedback mechanism.

The effect of the response to stimulus: shut off the original stimulus or _______ its intensity.

is a mechanism that reverse a deviation from the set point.

are rare because they tend to increase the original stimulus.

Homeostasis is important because most disease can be regarded as a result of its disturbance.

As we age our organs becomes _____ efficient. Internal condition becomes _______ stable.

Hormonal imbalance will place us at an increasing risk for illness and produces the changes we associate with ________.

childbirth is an example of

blood clotting is an example of

sweating

Fever response

body temperature regulation

blood pressure regulation

blood glucose regulation

hormone regulation

Oxygen and Carbon Dioxide Levels in Breathing

Regulation of Water Balance

It is the automatic physiologic reaction to an event that is perceived as stressful or frightening.

The perception of ________ – activate the sympathetic nervous system – acute stress response – prepares the body for “fight or flight.

fight and flight responses are evolutionary adaptations to _______ the chances of survival.

______ or inappropriate activation of the fight or flight response is implicated in a range of clinical conditions including most anxiety disorders