Question

Suppose a neuron was at rest around -65mV when it was exposed to a neurotransmitter that...

Suppose a neuron was at rest around -65mV when it was exposed to a neurotransmitter that caused the neuron to hyperpolarize. Which of the following could be effected of the neurotransmitter?

a. It increased K+ conductance

B. It opened Na+ channels

C. It produced an inward flow of positive ions and increased membrane potential, Vm

D. It increased the amount of positive charge in the neuron

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Answer #1

Ans) a. It increased K+ conductance

Explaination:.hyperpolarisation is the state where the membrane potential of inside of axon become more negative as compare to outside due to late closure of K+ ion channel which eflux the K + ions from inside to outside of axon membrane creating more negative charge inside axon.

Opening of Na+ ion causes influx of Na+ insode ion which make inside of axon membrane lesa negative and on reaching thresold it develops action potential ie depolarisation of membrane.

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