The most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is:

The most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is:

The most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is:





  1. the ligand-binding properties of the receptor.
  2. whether the permeant ion is positively or negatively charged.
  3. whether the permeant ion's reversal potential is positive or negative.
  4. whether the permeant ion's reversal potential is positive or negative to threshold.
  5. None of the above


Answer: 4