An action potential refers to a

A) neural impulse.
B) synaptic gap.
C) neurotransmitter.
D) reflex.

Action Potential

A temporary reversal of an electrically charged membrane potential in neurons or muscle cells, facilitating signal transmission.

Neural Impulse

The electrical signal transmitted along a neuron that allows for communication between neurons in the brain and nervous system.

Synaptic Gap

The tiny space between neurons, across which neurotransmitters travel to carry signals from one neuron to another.