Question

The diagram given below is an external view of the human brain. Study the same and answer the questions that follows:
What are the structural and functional units of the brain? How are the parts of these units arranged in $A$ and $C$?

Answer 1

Neurons are the structural and functional units of the brain.

In part A (Cerebrum), the outer side contains cell bodies and the inner side contains axons of the neurons.

In part C (Medulla Oblongata), the outer side contains axons and the inner side contains cell bodies of the neurons.