Question

Choose the odd one out from the following terms given and name the category to which the other belong

• A. Dendrites
• B. Medullary sheath
• C. Axon
• D. Spinal cord

Answer 1

The correct option is D

Spinal cord

The correct option is D.

Explanation of correct option :

1. The spinal cord runs mid-dorsally in the neural canal of the vertebral column, forming the posterior half of the CNS.
2. Grey matter and white matter are two forms of neural tissue that make up the spinal cord.
3. It is not a part of a neuron.

Explanation of incorrect options:

Option A:

1. Dendrites: a nerve cell's small branching extension that transmits impulses received from neighboring cells at synapses to the cell body.
2. It is a part of a neuron.

Option B:

1. Medullary sheath: A layer of myelin that surrounds and protects particular nerve fibers.
2. It is also part of a neuron.

Option C:

1. Axon: A part of a nerve cell (neuron) that conducts nerve impulses away from the cell body.
2. It is also known as a nerve fiber and is a part of a neuron.

Final answer: The odd one out is spinal cord