Question

Excitatory postsynaptic potentials can occur as either fast or slow responses _____.

a) True
b) False

Answer 1

True. Excitatory postsynaptic potentials (EPSPs) can occur as fast or slow responses. These EPSPs depolarize the postsynaptic neuron and bring it closer to the threshold for firing an action potential.

Step-by-step explanation:

True. Excitatory postsynaptic potentials (EPSPs) can occur as either fast or slow responses. EPSPs are graded potentials that depolarize the postsynaptic neuron, bringing it closer to the threshold for firing an action potential.

These EPSPs can be generated by the binding of excitatory neurotransmitters to ligand-gated channels on the postsynaptic membrane.

The opening of these channels allows the influx of positive ions, leading to a depolarization of the membrane and the propagation of an action potential if the depolarization reaches the threshold.