Which of the following is consistent with the all-or-none law? ...

[dbose]

Which of the following is consistent with the all-or-none law?
 
  a. The action potential will diminish to near 0 mV when transmitted down a long axon.
  b. The action potential fires at the same rate regardless of the inputs to the neuron.
  c. The action potential is conducted more rapidly down the axon as it reaches the axon terminal.
  d. The action potential is produced whenever the membrane potential reaches threshold.
  e. The action potential travels only in one direction.

Question 2

Which of the following events restores the membrane potential from the peak of the action potential back down to the resting level?
 
  a. Sodium ions move into the cell.
  b. Potassium ions move out of the cell.
  c. Potassium ions move into the cell.
  d. Chloride ions move into the cell.
  e. Protein anions move out of the cell.

[tmlewis4706]

Answer to Question 1

Answer: d. The action potential is produced whenever the membrane potential reaches
threshold.

Answer to Question 2

Answer: b. Potassium ions move out of the cell.