The conduction velocity of nerve impulse depends upon the
A
Diameter of the nerve fibres
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B
Temperature
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C
Both A and B
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D
None of the above
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Solution
The correct option is C Both A and B Nerve conduction velocities are specific to each individual and depend largely on an axon's diameter and the degree to which that axon is myelinated. The conduction velocities of the most motor and sensory nerves are positively and linearly associated with body temperature (low temperatures slows nerve conduction velocity and higher temperature increases conduction velocity).