3
QuizMultiple Choice

Nerve Conduction

Question 3 • Biology - SC3209 IC

Which best describes an axon with myelin and an axon without myelin?

Answer
A
Impulse transmission would be faster in the axon with myelin.
B
Impulse transmission would be slower in the axon with myelin.
C
An "all" response would occur in the axon with myelin.
D
A "no" response would occur in the axon with myelin.

Explanation

Myelin insulates the axon and allows the nerve impulse to travel by jumping between gaps in the myelin sheath. This makes transmission faster than in an axon without myelin, where the impulse travels along the entire membrane. Therefore, the best description is that impulse transmission would be faster in the axon with myelin.

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