Question 1
The voltage at a receptor site has just changed from -70 millivolts to -75 millivolts. What caused the change?
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excitatory postsynaptic potential◦
influx of potassium ions◦
influx of sodium ions◦
inhibitory postsynaptic potentialQuestion 2
Through which type of nerves does the brain send messages to the skeletal muscles in the legs when you are walking?
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central◦
afferent◦
efferent◦
sensory