Homeostasis Flashcards
In order to maintain homeostasis…
…cells must be in an environment that allows them to function properly with changing external conditions
Organs and systems work to maintain homeostasis
The tendency of the body’s systems to maintain a relatively constant or balanced internal environment
…cells must be in an environment that allows them to function properly with changing external conditions
Organs and systems work to maintain homeostasis
The tendency of the body’s systems to maintain a relatively constant or balanced internal environment
In order to maintain homeostasis…
There are three essential components of all homeostatic control mechanisms:
control center, receptor, and effector.
control center, receptor, and effector.
There are three essential components of all homeostatic control mechanisms:
4 main components:
Sensor mechanism/receptor
Integrator/control center
effector mechanism
Feedback
Sensor mechanism/receptor
Integrator/control center
effector mechanism
Feedback
4 main components:
Sensor mechanism/receptor
Glands nerve cells act as sensors
Transmits a signal to the integrator
Glands nerve cells act as sensors
Transmits a signal to the integrator
Sensor mechanism/receptor
Integrator/control center
Control center of the feedback loop
In the area of the brain
Analyzes signals and checks with other signals/variables
Value against set point (normal range for this variable)
If the signal is abnormal, then action is necessary and sends signal to effector mechanism
Control center of the feedback loop
In the area of the brain
Analyzes signals and checks with other signals/variables
Value against set point (normal range for this variable)
If the signal is abnormal, then action is necessary and sends signal to effector mechanism
Integrator/control center
Effector mechanism
Organs: glands, muscles
Provide the response desired
Influence or change the values of the variables
Can be a positive or negative value change
Variables attains new values»_space; feedback
Organs: glands, muscles
Provide the response desired
Influence or change the values of the variables
Can be a positive or negative value change
Variables attains new values»_space; feedback
Effector mechanism
Feedback
Feedback to integrators that lie in the set point range
Feedback to integrators that lie in the set point range
Feedback
Positive feedback
amplify their initiating stimuli, in other words, they move the system away from its starting state.
