BIO NMDCAT Neurons

nmdcat.online July 7, 2026

The speed of nerve impulse conduction is highest in nerve fibers that are

A. Thin and unmyelinated

B. Thick and unmyelinated

C. Thin and myelinated

D. Thick and myelinated

✓

📝 Explanation

Conduction velocity is positively correlated with both axon diameter (reducing internal electrical resistance) and the presence of myelination (allowing fast saltatory conduction).

📖 Additional Information

Thin and unmyelinated
Thick and unmyelinated
Thin and myelinated
Thick and myelinated

Conduction velocity is positively correlated with both axon diameter (reducing internal electrical resistance) and the presence of myelination (allowing fast saltatory conduction).

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