timer Asked: Apr 27th, 2020

Question Description

i need answers for these questions

Nervous System I—The Neuron: Generation of an Action Potential

  • 1- Where is the action potential initially generated?
  • 2- What happens to voltage-gated sodium channels at threshold?
  • 3- What happens if there is a weak stimulus at the initial segment, and threshold is not reached?

  • 4- What are the names of the two gates on the voltage-gated sodium channels?
  • 5- Just after the peak of the depolarization phase, what happens to the activation and inactivation gates of voltage-gated sodium channels?

  • 6- What happens to the membrane potential during the repolarization phase of the action potential, and what causes this change?
  • 7- At the end of the action potential’s depolarization phase, the membrane potential is about ____________ mV.
  • 8- The depolarization phase of the action potential is primarily due to a change in membrane permeability to ____________.
  • 9- If the membrane reaches the trigger point, known as threshold, it will generate a(n) ____________.

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