Which of the following are controlled by limbic system : (A) Emotional reaction (B) Sexual behaviour (C) Respiration (D) Olfaction (E) Body balance Choose the correct option

Options

A. A,B,C,D,E
B. A,B,D
C. A,B,C,D
D. A,B,D,E

Answer

To determine which functions are controlled by the limbic system, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Emotional Reaction (A)**:
- The limbic system is primarily responsible for regulating emotions. It plays a crucial role in emotional responses such as fear, pleasure, and anger.
- **Conclusion**: This option is correct.

2. **Sexual Behaviour (B)**:
- The limbic system is also involved in sexual behavior and the experience of pleasure. Structures within the limbic system, such as the hypothalamus, are key in regulating sexual functions.
- **Conclusion**: This option is correct.

3. **Respiration (C)**:
- Respiration is not controlled by the limbic system; it is primarily regulated by the medulla oblongata, which is part of the brainstem.
- **Conclusion**: This option is incorrect.

4. **Olfaction (D)**:
- The sense of smell (olfaction) is closely linked to the limbic system. The olfactory bulb sends signals to the limbic system, which is why smells can trigger strong emotional responses.
- **Conclusion**: This option is correct.

5. **Body Balance (E)**:
- Body balance is controlled by the cerebellum, not the limbic system. The cerebellum coordinates voluntary movements and maintains posture and balance.
- **Conclusion**: This option is incorrect.

### Summary of Correct Options:
- The correct functions controlled by the limbic system are:
- (A) Emotional reaction
- (B) Sexual behaviour
- (D) Olfaction

### Final Answer:
The correct option is **A, B, D**.

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