Which of the following statements is incorrect about cortex of cerebrum ?

Options

A. It consists of grey matter
B. It consists of white matter
C. It shows prominent folds
D. It contains motor areas. sensory areas and association areas

Answer

To determine which statement is incorrect about the cortex of the cerebrum, we need to analyze the characteristics of the cerebral cortex. Here’s a step-by-step solution:

### Step 1: Understand the Structure of the Cerebral Cortex
The cerebral cortex is the outer layer of the cerebrum and is primarily composed of gray matter. This gray matter consists of neuronal cell bodies, dendrites, and unmyelinated axons.

**Hint:** Remember that the gray matter is what gives the cortex its characteristic color and is crucial for processing information.

### Step 2: Evaluate the Options
Now, let’s evaluate the given options one by one:

1. **Option 1: It consists of gray matter.**
- This statement is **correct** because the cortex is indeed made up of gray matter.

2. **Option 2: It consists of white matter.**
- This statement is **incorrect** because the cortex is primarily composed of gray matter, while white matter is found beneath the cortex and consists of myelinated axons.

3. **Option 3: It shows prominent folds.**
- This statement is **correct**. The cerebral cortex has many folds (gyri) and grooves (sulci), which increase its surface area.

4. **Option 4: It contains motor areas, sensory areas, and association areas.**
- This statement is **correct**. The cortex is involved in various functions, including motor control and sensory processing.

### Step 3: Identify the Incorrect Statement
Based on the evaluation, the incorrect statement about the cortex of the cerebrum is **Option 2**, which claims that it consists of white matter.

### Final Answer
The incorrect statement about the cortex of the cerebrum is **Option 2: It consists of white matter.**

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