Which one of the following pair is related to midbrain of human ?

Options

A. Corpus callosum and Cruracerbri
B. Corpora quadrigemina and Limbic system
C. Association areas and Brain stem
D. Cruracerbri and Corpora quadrigemina

Answer

To solve the question "Which one of the following pair is related to midbrain of human?", we will analyze each of the provided options step by step.

### Step 1: Understand the Structure of the Brain
The human brain is divided into three main parts: the forebrain, midbrain, and hindbrain. Each of these parts has specific structures associated with them.

### Step 2: Analyze Each Option
1. **Corpus Callosum and Crura Cerebrae**:
- The **Corpus Callosum** is a part of the forebrain, connecting the two cerebral hemispheres.
- The **Crura Cerebrae** is part of the midbrain.
- This pair is not related to the midbrain as a whole.

2. **Corporas Quadrigeminae and Limbic System**:
- The **Corporas Quadrigeminae** is located in the midbrain and consists of four rounded swellings.
- The **Limbic System** is part of the forebrain, involved in emotions and memory.
- This pair is not related to the midbrain as a whole.

3. **Association Areas and Brain Stem**:
- **Association Areas** are part of the forebrain, responsible for integrating sensory information and higher cognitive functions.
- The **Brain Stem** includes the midbrain, but this option combines structures from both the forebrain and midbrain.
- This pair is not exclusively related to the midbrain.

4. **Crura Cerebrae and Corpora Quadrigeminae**:
- The **Crura Cerebrae** are part of the midbrain, consisting of two longitudinal bands of myelinated nerve fibers.
- The **Corporas Quadrigeminae** are also part of the midbrain, consisting of four rounded swellings.
- This pair is entirely related to the midbrain.

### Conclusion
The correct answer is the fourth option: **Crura Cerebrae and Corpora Quadrigeminae**, as both structures are components of the midbrain.

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