Respiratory centre is situated in

Options

A. cerebellum
B. medulla oblongata
C. hypothalamus
D. cerebrum

Explanation

**Step-by-Step Solution:**

1. **Understanding the Respiratory Center**: The respiratory center is responsible for regulating the process of respiration, which includes both inspiration (inhaling) and expiration (exhaling).

2. **Identifying the Location**: The respiratory center is primarily located in two areas of the brain: the medulla oblongata and the pons. Both of these structures are part of the hindbrain.

3. **Role of the Medulla Oblongata**: The medulla oblongata contains the respiratory rhythm center, which is crucial for controlling the rhythm of breathing. It has two groups of neurons:
- **Dorsal Respiratory Group (DRG)**: Primarily responsible for initiating inspiration.
- **Ventral Respiratory Group (VRG)**: Responsible for both inspiration and expiration, allowing for a more flexible control of breathing.

4. **Role of the Pons**: The pons contains the pneumotaxic center, which helps regulate the duration of inspiration. It limits the length of time for which air is inhaled, thus facilitating the transition to expiration.

5. **Conclusion**: The respiratory center is situated in the medulla oblongata and the pons, both of which play vital roles in controlling the respiratory process.

6. **Final Answer**: Therefore, the correct answer to the question is that the respiratory center is situated in the **medulla oblongata and pons**.

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