What happens when an action potential arrives at an axon terminal?
a. Membrane voltages stimulate the axon.
b. The action potential starts a chain reaction.
c. A neurotransmitter builds up so it can be used again.
d. The action potential causes an influx of phosphorous ions.
e. Chemicals relay the message at a synapse.
ANSWER: e
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A. Cambrian Period B. Phanerozoic Eon C. Archaean Eon D. Quaternary Period E. Devonian Period
The genetic engineering of human-animal hybrids is a routine procedure related to assisted reproductive technologies
a. True b. False Indicate whether the statement is true or false
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The occurrence of an action potential can best be compared to a
a. switch to turn a lamp on and off. b. volume control on a stereo. c. door to a classroom. d. room light dimmer switch. e. gradually inclined ramp.