Neuron & Action Potential – AP Psychology

1. The resting potential of a neuron is approximately:

+30 mV −70 mV 0 mV −20 mV

2. During depolarization, which ion rushes IN?

K+ (potassium) Na+ (sodium) Cl− (chloride) Ca2+ (calcium)

3. The all-or-none principle means:

Neurons fire at different strengths A neuron either fires fully or not at all Only some neurons can fire Firing depends on neurotransmitter type