AP PSYCHOLOGY

Detailed explanation-1: -A nerve impulse begins when a neuron receives a chemical stimulus. The nerve impulse travels down the axon membrane as an electrical action potential to the axon terminal. The axon terminal releases neurotransmitters that ca rry the nerve impulse to the next cell.

Detailed explanation-2: -Action Potentials. This “firing” of impulse messages is called the action potential. An action potential is a brief electrical charge that travels down the axon of the neuron.

Detailed explanation-3: -An action potential, also called a nerve impulse, is an electrical charge that travels along the membrane of a neuron. It can be generated when a neuron’s membrane potential is changed by chemical signals from a nearby cell.

Detailed explanation-4: -The action potential moves down the axon due to the influx of sodium depolarizing nearby segments of axon to threshold. Animation 6.7. A voltage change that reaches threshold will cause voltage-gated sodium channels to open in the axonal membrane.

Detailed explanation-5: -The axon hillock acts as something of a manager, summing the total inhibitory and excitatory signals. If the sum of these signals exceeds a certain threshold, the action potential will be triggered and an electrical signal will then be transmitted down the axon away from the cell body.