negative feedback loop where a receptor detects a stimulus indicating a change making level of something too high or low. coordination centre will process information and organise a response. effector produces a response to counteract change and bring level back to optimum.
coordination centre
Receives and processes the information then organises a response. eg, brain, pancreas, spinal cord
three things homeostasis controls
- blood glucose level
- water content
- body temp
automatic control systems may involve
nervous responses or chemical responses
receptor
Receptors detect a stimulus, which is a change in the environment, such as temperature change.
coordination centre role
-Coordination centres in the brain, spinal cord or a gland (eg the pancreas).
-These receive information from the receptors, process the information and initiate a response.
effector role
Effectors, such as muscles or glands produce the response. Muscles would contract while glands would release a hormone, which would restore the optimum condition again.
