Which of the following is not the main part of limbic system ?

Options

A. Amygdala
B. Septum
C. Hippocampus
D. Corpus striatum

Answer

To determine which of the following is not a main part of the limbic system, we will analyze each option provided:

1. **Amygdala**: This is a key component of the limbic system. It is involved in emotions, particularly fear and pleasure responses.

2. **Septum**: The septum is also part of the limbic system. It plays a role in emotional regulation and is associated with the pleasure center of the brain.

3. **Hippocampus**: This structure is crucial for memory formation and is a significant part of the limbic system.

4. **Corpus Striatum**: This structure is not part of the limbic system. Instead, it is associated with the basal ganglia, which is involved in the regulation of voluntary motor movements and procedural learning.

Based on the analysis, the answer to the question is that the **Corpus Striatum** is not a main part of the limbic system.

### Final Answer:
The option that is not a main part of the limbic system is **Corpus Striatum**.

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