Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at

Options

A. pons region of brain
B. thatlamus
C. spinal cord
D. right cerebral hemsphere

Answer

To answer the question regarding the location of the pneumotaxic center, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Pneumotaxic Center**:
- The pneumotaxic center is a group of neurons in the brain that plays a crucial role in regulating the respiratory rhythm. It acts as a switch-off center for respiration.

2. **Function of the Pneumotaxic Center**:
- This center limits the duration of inspiration (inhalation) by inhibiting the apneustic center, which is responsible for promoting inhalation. By doing this, it can increase the respiratory rate.

3. **Identifying the Location**:
- The pneumotaxic center is specifically located in the pons region of the brain. The pons is part of the brainstem and is involved in various functions, including the regulation of breathing.

4. **Eliminating Other Options**:
- The thalamus is primarily involved in sensory perception and regulation of motor functions, not directly in respiration.
- The spinal cord is responsible for transmitting signals between the brain and the body but does not contain the pneumotaxic center.
- The right cerebral hemisphere is involved in various higher brain functions but does not house the pneumotaxic center.

5. **Conclusion**:
- Therefore, the correct answer is that the pneumotaxic center is present in the pons region of the brain.

### Final Answer:
The pneumotaxic center is present in the **pons region of the brain**.

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