Examlex
The Addition Rule concerns one of several possible events.
Nicotine
A stimulating and addictive substance found in tobacco products.
Agonist
A chemical or drug that binds to receptors in the brain and causes a reaction similar to that of a naturally occurring neurotransmitter.
Excitatory Signal
A type of neurotransmitter-induced signal in the nervous system that increases the likelihood of a neuron firing an action potential.
Action Potential
A sudden increase and subsequent decrease in the voltage across a cell membrane resulting from the movement of charged particles.
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