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Define stimulus
A detectable change in the environment
Stimulus flow chart
Stimulus → Receptor → Coordinator → Effector → Response
Role of the receptor
Detects changes in the environment
Leads to action potentials travelling down sensory neurons
Outline the role of a transducer
Converts one form of energy into another form of energy
What are the channels in the sensory neurone’s plasma membrane called?
Stretch mediated sodium ion channels
What form of stimulus do pacinian corpuscles detect?
Mechanical force → Pressure