MEDICAL PHYSIOLOGY

Detailed explanation-1: -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-2: -A nerve impulse is a sudden reversal of the electrical charge across the membrane of a resting neuron. The reversal of charge is called an action potential. It begins when the neuron receives a chemical signal from another cell.

Detailed explanation-3: -An action potential can be further broken down into its separate stages: depolarization, repolarization, hyperpolarization, and the refractory period.

Detailed explanation-4: -Summary. An action potential is caused by either threshold or suprathreshold stimuli upon a neuron. It consists of three phases: depolarization, overshoot, and repolarization. An action potential propagates along the cell membrane of an axon until it reaches the terminal button.

Detailed explanation-5: -Action potential. Unlike a graded potential, an action potential is capable of traveling long distances. Repolarization. Hyperpolarization. Refractory period.