Question

Which of the following is not true about white matter of the brain?

• A. White matter is made up of myelinated nerve fibres.
• B. The outer portion of cerebrum consists of white matter.
• C. White colour of white matter is due to medullary sheath present around nerve fibres
• D. 20% of the total brain mass is composed of white matter.

Answer 1

The correct option is B The outer portion of cerebrum consists of white matter.

White matter is present in the brain's underlying tissues - the subcortical regions of the brain. It is a huge network of neuronal connections that connects the brain's four lobes such as the frontal, temporal, parietal, and occipital, as well as the limbic system's emotional center.