Fill in the blanks in the text that follows to accurately complete the passages:

Question

Fill in the blanks in the text that follows to accurately complete the passages:

Neurons, like many other types of cells in the body are ____________ which means they have a difference in charge across their plasma membranes.

The charge difference across the face of the plasma membrane is referred to as the _____________.

When the neuron is in its 'resting' state - that is, when it is not stimulated, the membrane potential measures roughly ____________ mV where, by convention, the negative sign means the ________ of the cell is negative with respect to the ______________ of the cell.

The resting membrane potential is due to 3 main factors which include:

1) 'fixed' ______ like SO4= and PO= and many proteins that, because of their net negative charges and sizes are effectively 'trapped' within the cell

2) the activity of the Na/K ATPase pumps

and

3) the permeability of the neuron to ions, particularly to ________ and __________ (in alphabetical order) ions.

Explanation / Answer

1) Permiable - the impulse change as per the permeability of the plasma membrane.

2) membran potential - the membrane is electrically active and allow tranmission of implused across the plasma membrane.

3) -20mv to -200mv; negative sign means the charge; membrane potential

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