Resting Membrane Potential

In an experiment to measure the membrane potential of a living plant cell micro-electrodes are placed inside and outside the cell. The membrane potential is measured to be 120 mV and a current of 1.5 nA flows through the membrane .Assume that the current density in the cell is uniform. The total area of the cell membrane is 2.0 m m^(2) and its thickness is 12 mum . (a) What is the current density in the membrane? (b) What is the resistivity of the membrane ?

Assertion:The resting membrane of the neuron exhibits polarity of charges Reason:The outer surface of the axonal membrane possesses a negative charge while its inner surface becomes positively charged.

Potential difference across resting membrane is negatively charged. This is due to differential distribution of the following ions.

In the retina, the membrane potentials are first generated in:

The ionic gradients across the resting membrane are mainained by the

One microelectrode is inserted into a healthy neuron and another is placed outside the ceil.If the neuron is then hyperpolarised by a chemical stimulus, what will happen to the membrane potential recorded by the electrodes?

...........is the property by virtue of which the free surface of the liquid at rest behaves like a stretched elastic membrane tending to contract to occupy minimum surface area.