what is resting potential memberane
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Answers
Imagine taking two electrodes and placing one on the outside and the other on the inside of the plasma membrane of a living cell. If you did this, you would measure an electrical potential difference, or voltage, between the electrodes. This electrical potential difference is called the membrane potential.
Like distance, potential difference is measured relative to a reference point. In the case of distance, the reference point might be a city. For instance, we can say that Boston is 190190190 \text{miles}milesstart text, m, i, l, e, s, end text northeast, but only if we know that our reference point is New York City.
For a cell’s membrane potential, the reference point is the outside of the cell. In most resting neurons, the potential difference across the membrane is about 303030 to 909090 \text{mV}mVstart text, m, V, end text (a \text{mV}mVstart text, m, V, end text is 1/10001/10001, slash, 1000 of a volt), with the inside of the cell more negative than the outside. That is, neurons have a resting membrane potential (or simply, resting potential) of about -30−30minus, 30 \text{mV}mVstart text, m, V, end text to - 90−90minus, 90 \text{mV}mVstart text, m, V, end text.
- If the membrane potential becomes more positive than it is at the resting potential, the membrane is said to be depolarized.
- If the membrane potential becomes more negative than it is at the resting potential, the membrane is said to be hyperpolarized.
Answer:
Generally it is Resting Membrane Potential.. of a neuron is about -70 mV means that the inside of the neuron is about 70 mV less than the outside...