A Postsynaptic Neuron Has Three Presynaptic Inputs - from Neurons

question 35

Multiple Choice

A postsynaptic neuron has three presynaptic inputs - from neurons X,Y and Z.When X and Y are stimulated simultaneously and repeatedly,the postsynaptic neuron reaches threshold and undergoes an action potential.When X and Z are stimulated simultaneously,however,there is no change in the membrane potential of the postsynaptic neuron.The simultaneous stimulation of X and Y is an example of

• A)Temporal summation
• B)Presynaptic inhibition
• C)Spatial summation
• D)Neuronal divergence
• E)None of the choices are correct

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