Neurophysiology

What is the resting membrane potential?

• The potential energy generated by separated charge

• The ability of neurons to rapidly change their membrane potential

• The charge difference across the plasma membrane

• The state of a neuron when it is not transmitting a signal

What makes neurons different from most other cells in terms of membrane potential?

• Neurons have a resting membrane potential

• Neurons can rapidly change their resting membrane potential

• Neurons do not have a membrane potential

• Neurons have a constant membrane potential

What is voltage a measure of?

• The speed of signal transmission in neurons

• The potential energy generated by separated charge

• The amount of neurotransmitters released

• The resistance across the plasma membrane

How is voltage measured?

• In amperes (A)

• In ohms (Ω)

• In volts (V) or millivolts (mV)

• In watts (W)

What is another term for potential difference?

• Resting potential

• Action potential

• Membrane potential

• Voltage

What results in a higher voltage across the plasma membrane?

• Lower charge difference between points

• Greater charge difference between points

• Constant charge difference between points

• No charge difference between points

What is the average resting membrane potential of neurons?

• -70 mV

• +40 mV

• 0 mV

• -90 mV

What does it mean when a resting membrane is described as polarized?

• It has a positive charge inside the cell.

• It has a negative charge inside the cell.

• It has no charge difference across the membrane.

• It has equal charges inside and outside the cell.

What is the range of the resting membrane potential in neurons?

• -10 to -30 mV

• -20 to -50 mV

• -40 to -90 mV

• -60 to -100 mV

What is the primary reason for the generation of resting membrane potential?

• Differences in ionic composition

• Differences in temperature

• Differences in cell size

• Differences in pH levels