How is the electricity in a action potential generated?

Answer 1

Generally speaking the neuron is becoming depolarized, but to be more specific

Phases of Action Potential:

1. Resting Potential: Vm = -65mV

2. Rising Phase: Vm = 40mV; Rapid depolarization of the membrane.

3. Overshoot: When the inside of the neuron is positively charged with respect to the outside of the membrane.

4. Falling Phase: Rapid depolarization until the membrane in more negative than the resting potential (-65mV)

a. The last part of the falling phase is called the undershoot, or after-hyperpolarization.

Answer 2

There is a imbalance of charges from the outside and inside of a neuron when the neuron is resting and the plasma membrane is polarized. The inside is more negative, about -70mv. That is because there are more negatively charged ions in the neuron. There are more potassium ions inside the neuron, and more sodium ions outside the neuron. When a sodium channel opens (because of stimuli), sodium ions rush into the neuron, since things go from higher concentration to lower concentration. The polarity of the neuron changes from the inward rush of sodium ions. This is called depolarization. If the sodium influx is strong enough, the local depolarization causes an action potential, where a neuron initiates and transmits a long distance signal. An action potential is also known as a nerve impulse.

Answer 3

It causes friction while rubbing up against the cell membrane, lighting the cell up like a light bulb and static electricity is made causing electricity to be formed

Answer 4

Positive