Stimulus and response! For the A Level Biology exam, you will need to know the basic structure of a Pacinian corpuscle, and the deformation of stretchmediated sodium ion channels in a Pacinian corpuscle—leading to the establishment of a generator potential.

The Pacinian corpuscle is used as an example of neuronal communication of a receptor to illustrate that:
a) receptors respond only to specific stimuli
b) stimulation of a receptor leads to the establishment of a generator potential.

This is for A Level AQA & OCR Students.

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