Firing of a neuron

• When a neuron is in resting state the inside of the cell is negatively charged compared to the outside
• When a neuron is in resting state the inside of the cell is negatively charged compared to the outside
• When a neuron is activated by a stimulus, the inside of the cell becomes positively charged for a split second causing an action potential to occur
• This creates electrical impulses that travels down the axon towards the end of the neuron
• Action potential: nerve signals that only occur in neurons and muscle cells
• This explains why some humans have natural reflexes