Pseudounipolar neurons are present in :

Options

A. Retina
B. Dorsal root ganglion
C. Olfactory mucosa
D. Cerebrum

Answer

### Step-by-Step Solution:

1. **Understanding Pseudounipolar Neurons**:
- Pseudounipolar neurons are a type of neuron that appears to have a single pole or process. However, they actually have two branches that function similarly to a bipolar neuron. The term "pseudo" indicates that it is not truly unipolar.

2. **Classification**:
- These neurons are classified as sensory neurons. Sensory neurons are responsible for transmitting sensory information from the peripheral nervous system to the central nervous system.

3. **Structure of Pseudounipolar Neurons**:
- The structure of pseudounipolar neurons consists of a single axon that bifurcates into two branches. One branch extends into the peripheral nervous system (PNS), while the other branch enters the spinal cord.

4. **Location**:
- Pseudounipolar neurons are primarily found in the dorsal root ganglia, which are clusters of sensory neurons located just outside the spinal cord. This location is crucial for their role in transmitting sensory information.

5. **Conclusion**:
- Based on the above information, the correct answer to the question "Pseudounipolar neurons are present in:" is **dorsal root ganglion**.

### Final Answer:
- **Pseudounipolar neurons are present in the dorsal root ganglion.**

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