Examlex
What two countries provide the gateway to Europe for Syrians fleeing that nation's civil way?
Absolute Refractory Period
The period immediately following the firing of a nerve fiber when it cannot be stimulated to fire again, no matter how strong the incoming signal.
Action Potential
A momentary change in electrical potential on the surface of a neuron that occurs when it is stimulated and is capable of transmitting a signal along the neuron.
Millivolts
A unit of electric potential equal to one thousandth of a volt.
Relative Refractory Period
A phase following immediate action where a neuron is less responsive to stimulation and requires a stronger than normal impulse to activate.
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