Central nervous system axons regenerate much better in fish than in mammals because fish:
A) nerves do not have to travel so far to reach their target.
B) myelin does not secrete proteins that inhibit axon growth.
C) nerves have so much more myelin than do mammal nerves.
D) myelin secretes a protein that accelerates regeneration.

Question

Quizplus · Accepted Answer

Myelin in fish does not secrete proteins that inhibit axon growth, which allows for better regeneration compared to mammals.

Central Nervous System Axons Regenerate Much Better in Fish Than