MUSCLE 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: -At the synapse, the firing of an action potential in one neuron-the presynaptic, or sending, neuron-causes the transmission of a signal to another neuron-the postsynaptic, or receiving, neuron-making the postsynaptic neuron either more or less likely to fire its own action potential.

Detailed explanation-3: -An action potential occurs when a neuron sends information down an axon, away from the cell body. Neuroscientists use other words, such as a “spike” or an “impulse” for the action potential. The action potential is an explosion of electrical activity that is created by a depolarizing current.

Detailed explanation-4: -dendrite → axon → axonal end → cell body.