Question

Which of the following is true regarding an IPSP?

a) it will occur if a ligan-gated sodium channel is opened

b) it can be generated by epinephrine

c) If it’s large enough, one of them it can lead to an action potential being generated

d) the neuron’s membrane potential will become more megative

e) if it’s a large enough potassium voltage gated channels will open

Answer 1

Ans:- d) the neuron’s membrane potential will become more negative.

Concept:-

IPSP refers to inhibitory post synaptic potential.

Ipsp lead to inhibition of generation of action potential by causing hyperpolarisation of the membrane.

IPSP is generated due to increase negative membrane potential of neuron.

it is generally created by

i) influx of Cl- ion into the neuron

ii) efflux of K + ion out of the cell.

Neurotransmitters involve are gaba

other options are wrong because.

I) Na channel opening cause excitatory postsynaptic potential GENERATION.

ii)epinephrine cause EPSP

III) excess EPSP cause action potential.

Iv) it is for repolarisation