What do grey and white matter in the brain represent?
Ans.
The outer region of cerebrum is composed of grey matter which is also called cerebral cortex.The grey matter represents the high concentration of cell bodies of the neuron. The inner region of cerebrum is composed of white matter which is also called cerebral medulla. The white matter represents the high concentration of axons which gives it lighter appearance. Hence, medulla is lighter in color and is called white matter.