Question

Look at the diagram of an axon. It has this covering structure on them called myelin sheath. What is its function ?

• A. It maintains shape of the neuron
• B. Electrical insulation
• C. It is protective in nature
• D. None of these

Answer 1

The correct option is B

Electrical insulation

Neurons are covered by myelin sheath to prevent the escape of impulse to the surrounding. This electrically insulating material/myelin sheath prevents the electrical impulses from jumping to other neurons. In short, they prevent short-circuiting of impulses.