A Hypothetical Postsynaptic Neuron Has Three Presynaptic Inputs-X, Y, and Z.When

question 225

Multiple Choice

A hypothetical postsynaptic neuron has three presynaptic inputs-X, Y, and Z.When X and Y are stimulated simultaneously, the postsynaptic neuron undergoes an action potential, yet when X and Z are stimulated simultaneously, there is no change in the postsynaptic neuron's potential.What can you logically conclude?

• A)Y and Z are both excitatory.
• B)Y and Z are both inhibitory.
• C)Y is excitatory and Z is inhibitory.
• D)Y is inhibitory and Z is excitatory.
• E)Not enough information to answer.

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