Which of the following is NOT true of nicotinic-gated channels?
A)The binding of ACh allows diffusion of Na+ into and K+ out of the neuron.
B)Only EPSPs are generated.
C)Only action potentials are generated.
D)Summation can occur because of a graded response.

Question

Quizplus · Accepted Answer

Nicotinic-gated channels, when activated by acetylcholine (ACh), can lead to excitatory postsynaptic potentials (EPSPs) by allowing the diffusion of Na+ into and K+ out of the neuron. They do not directly generate action potentials but can lead to them if the depolarization is sufficient. Summation can occur due to their graded response, making both A and D true. B is also true because nicotinic receptors primarily generate EPSPs. Therefore, C is not true as these channels themselves do not generate action potentials; they contribute to the conditions necessary for an action potential to be generated by the neuron.

Which of the Following Is NOT True of Nicotinic-Gated Channels