Practice question
Question
Which among the following statements are true? (A) Continuous conduction is faster than saltutatory conduction. (B) The frequency of impulses and the number of activated sensory neurons encode differences in stimuli intensities. (C) Large diameter axons conduct nerve impulses faster than the smaller diameter ones. (D) The diameter of an axon and the presence or absence of a myelin sheath are the most important factors that determine the speed of nerve impulse propagation. Choose the correct answer from the options given below :
Explanation
Neural coding relies on firing frequency and recruitment of sensory neurons for intensity. Larger diameter reduces internal resistance increasing conduction velocity, while myelin and diameter critically determine speed. Saltatory conduction is faster than continuous propagation.
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