Q5.9. Suppose a neuron was at rest around -65 mV when it was exposed to a neurot

Question

Q5.9. Suppose a neuron was at rest around -65 mV when it was exposed to a neurotransmitter that caused the neuron to hyperpolarize. Which of the following could be the effect of the neurotransmitter? (Assume the equilibrium potential for Kt is -85 mV and for Nat is 50 mV.) O It increased Kt conductance. O It opened Nat channels. O It produced an inward flow of positive ions and increased membrane potential, V. O It increased the amount of positive charge in the neuron (i.e., charge became more positive). Submit

Explanation / Answer

The hyperpolarizarion means that the inner side of the cell becomes more negative. This only happens when the K+ channels or Cl- channels are open. In this case the correct option would be Option A that is it increased K+ conductance and because of this the K+ ions go out of the cell and making it more hyperpolarize.

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