The inspiratory and expiratory centres in man are located in

Options

A. (a) pons
B. (b) cerebellum
C. (c) medulla oblongata
D. (d) one in pons and the other in cerebellum

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the location of the inspiratory and expiratory centers in humans. These centers are collectively known as the respiratory centers.

2. **Identifying the Options**: The options provided are:
- A) Pons
- B) Cerebellum
- C) Medulla oblongata
- D) One in pons and one in cerebellum

3. **Analyzing Each Option**:
- **Option A: Pons**: The pons is a part of the brain that plays a role in controlling the respiratory centers but does not house them. It is involved in regulating the rhythm of breathing but is not the location of the inspiratory and expiratory centers.
- **Option B: Cerebellum**: The cerebellum is primarily responsible for coordination, balance, and speech functions. It does not control respiratory functions, making this option incorrect.
- **Option C: Medulla Oblongata**: The medulla oblongata is responsible for controlling involuntary functions, including the respiratory and cardiac centers. This is where the inspiratory and expiratory centers are located, making this option correct.
- **Option D: One in pons and one in cerebellum**: This option suggests that one center is in the pons and the other in the cerebellum, which is incorrect based on the previous analysis.

4. **Conclusion**: After evaluating all the options, the correct answer is **C) Medulla oblongata**.

**Final Answer**: The inspiratory and expiratory centers in man are located in the **Medulla oblongata**.

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