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in Psychology by (71.1k points)

An excitatory post-synaptic potential 

A. Is the depolarization of a post-synaptic nerve cell membrane that occurs when a presynaptic neurone is stimulated. 

B. Involves reversal of polarity across the post-synaptic nerve cell membrane. 

C. May be recorded from a posterior root ganglion cell. 

D. Is propagated at the same rate as an action potential. 

E. Is caused by the electrical field induced by activity in the pre-synaptic nerve terminals.

1 Answer

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Best answer

A. True An inhibitory potential is a hyperpolarization. 

B. False It is a transient (about 5 msec), small (about 5 mV) depolarization towards the threshold for firing. 

C. False It may be recorded from a motor neurone. 

D. False It is not propagated. 

E. False It is caused by transmitters changing permeability in post-synaptic membranes.

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