AP PSYCHOLOGY

Detailed explanation-1: -A neuron at rest is negatively charged: the inside of a cell is approximately 70 millivolts more negative than the outside (−70 mV, note that this number varies by neuron type and by species).

Detailed explanation-2: -There are several potassium leakage channels in the human neuron; hence, potassium tends to leak out of the channels faster than sodium can enter through the channel. This causes a scenario of leaving the neuron’s interior with a high negative charge of almost-70 mV.

Detailed explanation-3: -A resting (non-signaling) neuron has a voltage across its membrane called the resting membrane potential, or simply the resting potential.

Detailed explanation-4: -Neurons have a negative concentration gradient most of the time, meaning there are more positively charged ions outside than inside the cell. This regular state of a negative concentration gradient is called resting membrane potential.

Detailed explanation-5: -The resting membrane potential of a neuron is about-70 mV (mV=millivolt)-this means that the inside of the neuron is 70 mV less than the outside. At rest, there are relatively more sodium ions outside the neuron and more potassium ions inside that neuron.