Question

Which one of the following parts of a neuron is covered by fatty sheath?

• A. Axon
• B. Cyton
• C. Dendrite
• D. Node of Ranvier

Answer 1

Answer: (A)

Axon

Neurons are the structural and functional units of the nervous system. A neuron is composed of three major parts:

1. Cell body
2. Dendrite
   
3. Axon
   

Axon is also known as the nerve fibre. It is a long fibre which arises from the cell body. One end of axon is attached to the cell body and other end is away from the cell body. Axons transmits the nerve impulses away from the cell body to a synapse or to a neuromuscular junction. Axon is covered by fatty sheath called myelin sheath. It acts as a biological electrical insulation.

Hence, the correct option is A.