What is the relationship between the speed of the impulse and the axon?
A) The larger the diameter of the axon,and the more myelin surrounding its outer surface,the faster the impulse.
B) The smaller the diameter of the axon,and the more myelin surrounding its outer surface,the faster the impulse.
C) The larger the diameter of the axon,and the less myelin surrounding its outer surface,the faster the impulse.
D) The larger the diameter of the axon,and the more myelin surrounding its outer surface,the slower the impulse.
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