Question

The diagram given below is are presentation of a phenomenon pertaining to the nervous system. Study the diagram and answer the following questions.

(v) How does the arrangement of
neurons in the spinal cord differ from
that of the brain?

Answer 1

The diagram given below is are presentation of a phenomenon pertaining to the nervous system. Study the diagram and answer the following questions.

(v) How does the arrangement of
neurons in the spinal cord differ from
that of the brain?

Answer:

• In brain, the outer portion of the cerebrum contains cell bodies of the neurons and appear grayish in colour. This is called the gray matter.
• The inner portion of the cerebrum consists of white matter which mainly contains the axons of the neurons.
• In spinal cord the arrangement of white matter and gray matter is reversed from that in the brain.
• Here, the gray matter lies on the inner side and the white matter on the outer side.