Maximum speed of nerve impulse transmission is____________?
Correct answer: C. 120m/sec
- A. 100 m/sec
- B. 110 m/sec
- C. 120m/sec
- D. 130 m/sec.
Explanation
The fastest impulses in heavily myelinated neurons travel at about 120 m/sec, or 120 metres per second, because myelin allows saltatory conduction between nodes of Ranvier. Students may choose 100 m/sec because it is a commonly quoted approximate speed, but it is not the maximum value used here.
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