Which of the following is NOT a feature of the cerebral cortex?

• A. It is composed of white matter.
• B. It is arranged in six layers.
• C. Its convoluted surface triples its surface area.
• D. It accounts for 40% of the brain mass.

Answer: (A)

Verified step by step guidance

1. Understand the structure of the cerebral cortex: The cerebral cortex is the outermost layer of the brain, primarily composed of gray matter, which consists of neuronal cell bodies, dendrites, and synapses.
2. Identify the features of the cerebral cortex: The cerebral cortex is known for its convoluted surface, which increases its surface area significantly, allowing for more neurons and synaptic connections.
3. Recognize the arrangement of the cerebral cortex: It is organized into six distinct layers, each with specific types of neurons and functions, contributing to its complex processing capabilities.
4. Consider the mass of the cerebral cortex: The cerebral cortex accounts for approximately 40% of the total brain mass, highlighting its importance in higher brain functions.
5. Determine the incorrect feature: Since the cerebral cortex is composed of gray matter, not white matter, the statement 'It is composed of white matter' is incorrect.