Corpora quadrigemina is found in …………..portion of ………….. .

Options

A. Ventral , Forebrain
B. Ventral, Midbrain
C. Dorsal, Forebrain
D. Dorsal, Midbrain

Answer

To solve the question "Corpora quadrigemina is found in …………..portion of …………..", we need to identify the correct anatomical location of the corpora quadrigemina.

### Step-by-Step Solution:

1. **Understanding Corpora Quadrigemina**:
- The term "corpora quadrigemina" refers to a structure in the brain that consists of four colliculi (two superior and two inferior). The name itself means "quadruplet bodies."

2. **Identifying the Location**:
- The corpora quadrigemina is located in the brain. Specifically, it is situated on the quadrigeminal plate, which is part of the midbrain.

3. **Determining the Portion**:
- The corpora quadrigemina is found on the posterior surface of the midbrain. The posterior surface is also referred to as the dorsal side.

4. **Evaluating the Options**:
- Now, let's analyze the options given:
- **Option 1**: Ventral and forebrain - Incorrect, as it is not in the forebrain.
- **Option 2**: Ventral and midbrain - Incorrect, as it is not in the ventral part.
- **Option 3**: Dorsal and forebrain - Incorrect, as it is not in the forebrain.
- **Option 4**: Dorsal and midbrain - Correct, as it accurately describes the location of the corpora quadrigemina.

5. **Conclusion**:
- The correct answer is that the corpora quadrigemina is found in the dorsal portion of the midbrain.

### Final Answer:
**Corpora quadrigemina is found in the dorsal portion of the midbrain.**