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On postsynaptic membrane, the new potential developed is

a)

Always inhibitory

b)

Always excitatory

c)

May be excitatory or inhibitory

d)

Neither excitatory nor inhibitory



Question ID - 5651 | SaraNextGen Top Answer

On postsynaptic membrane, the new potential developed is

a)

Always inhibitory

b)

Always excitatory

c)

May be excitatory or inhibitory

d)

Neither excitatory nor inhibitory

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

The kind of action potential to be developed on the membrane of postsynaptic neuron depends upon the action of neurotransmitter. It is summarized as follows

(i) Neurotransmitter  Excitatory Receptor  Open channels of  ions or both for  and    Depolarising of plasma membrane of postsynaptic Neuron  Action potential

(ii) Neurotransmitter  Inhibitory Receptor  Opens  or  channels  Hyperpolarisation of plasma membrane of postsynaptic neuron  No action potential so, the new potential developed may be either excitatory or inhibitory

127 votes


127