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What is the threshold potential for initiating an action potential in most neuro

Practice Questions

Q1
What is the threshold potential for initiating an action potential in most neurons?
  1. -70 mV
  2. -55 mV
  3. 0 mV
  4. +30 mV

Questions & Step-by-Step Solutions

What is the threshold potential for initiating an action potential in most neurons?
  • Step 1: Understand that neurons communicate using electrical signals called action potentials.
  • Step 2: Know that for an action potential to start, the neuron must reach a certain level of electrical charge, called the threshold potential.
  • Step 3: Recognize that the typical threshold potential for most neurons is around -55 millivolts (mV).
  • Step 4: Remember that if the neuron's charge reaches -55 mV, it will trigger an action potential, allowing the neuron to send a signal.
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