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

Options

A. thalamus
B. spinal cord
C. pons varolii
D. left cerebral hemisphere

Answer

**Step-by-Step Solution:**

1. **Understanding the Pneumotaxic Center:**
- The pneumotaxic center is a crucial part of the respiratory control system. It plays a significant role in regulating the rate and pattern of breathing.

2. **Function of the Pneumotaxic Center:**
- This center provides inhibitory impulses during inspiration. This means it helps to prevent the lungs from becoming over-distended, ensuring a balanced cycle of inhalation and exhalation.

3. **Location of the Pneumotaxic Center:**
- The pneumotaxic center is located in the upper part of the pons, which is a part of the brainstem.

4. **Specific Nuclei Involved:**
- Within the pons, the specific nuclei that function as the pneumotaxic center are the subparabrachial nucleus and the medial parabrachial nucleus. Together, these nuclei are responsible for the functions of the pneumotaxic center.

5. **Conclusion:**
- Therefore, the pneumotaxic center, which moderates the functions of the respiratory rhythm center, is present in the pons (specifically referred to as Pons Varolii).

**Final Answer:**
- The pneumotaxic center is present in the Pons Varolii.

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