Question

use the following information to answer question 27. an experiment was conducted to examine the relationship of neurons w, x, and y to neuron z. a microelectrode recorded the membrane potential of neuron z. the graph illustrates the results obtained. note: dotted lines indicate the times when neurons w, x, and y were stimulated. which row correctly identifies the excitatory and inhibitory neurons? row excitatory neuron(s) inhibitory neuron(s) a w x and y b x w and y c w and y x d x and y w 27. which row identifies correctly the excitatory and inhibitory neurons? a. row a b. row b c. row c d. row d

Explanation:

Excitatory neurons increase the likelihood of an action - potential in the postsynaptic neuron (depolarize it), while inhibitory neurons decrease the likelihood (hyperpolarize it). When neurons W and Y are stimulated, the membrane potential of neuron Z depolarizes, indicating they are excitatory. When neuron X is stimulated, the membrane potential of neuron Z hyperpolarizes, indicating it is inhibitory.

Answer:

C. Row C