Question

In human brain, the cerebral cortex contain roughly

• A. 5% of all neuron of brain
• B. 10% of all neuron of brain
• C. 20% of all neuron of brain
• D. 30% of all neuron of brain
• E. 75% of all neuron of brain

Answer 1

The correct option is E 75% of all neuron of brain

The cerebral cortex is the outer layer of the cerebral hemispheres. The cerebrum (or forebrain) makes up 75% of the brain by volume and 85% by weight. About 75% of all the brain's neurons are located in the cerebral cortex, mainly in the grey matter. So, the correct answer is option E.