ANATOMY

Detailed explanation-1: -When a neuron is not actively transmitting a nerve impulse, it is in a resting state, ready to transmit a nerve impulse. During the resting state, the sodium-potassium pump maintains a difference in charge across the cell membrane of the neuron.

Detailed explanation-2: -When axons are not conducting impulses (action potentials or depolarization events), they are said to be “at rest”.

Detailed explanation-3: -When a neuron is not conducting a nerve impulse, it is said to be at rest. The resting potential is the resting state of the neuron, during which time the neuron has an overall negative charge. The resting potential in neurons is approximately-70 milliVolts (mV).

Detailed explanation-4: -At resting potential concentration of ions is kept constant through Na+/K+ pumps. When the threshold is reached, the Na+ gated channel are opened. The threshold level is about-55 mV.

Detailed explanation-5: -When the depolarization reaches about-55 mV a neuron will fire an action potential. This is the threshold. If the neuron does not reach this critical threshold level, then no action potential will fire.