Read the following statements and choosed the correct option-
I. Cerebellum has very convoluted surface in order to provide the additional space for more neurons.
II. The medulla is connected to the spinal cord
III. Medulla contains controlling centres for respiration, cardiovascular reflexes and gastric secretion.

Options

A. All are correct
B. Only I is correct
C. Only I and III are correct
D. Only II is correct

Answer

To solve the question, we will analyze each of the three statements provided and determine their correctness.

### Step-by-Step Solution:

1. **Evaluate Statement I:**
- Statement: "Cerebellum has a very convoluted surface in order to provide additional space for more neurons."
- Analysis: The cerebellum does indeed have a convoluted surface, characterized by folds called folia. This structure increases the surface area, allowing for a greater number of neurons to be accommodated.
- Conclusion: **Statement I is correct.**

2. **Evaluate Statement II:**
- Statement: "The medulla is connected to the spinal cord."
- Analysis: The medulla oblongata is part of the brainstem and is located just above the spinal cord. It serves as a direct connection between the brain and the spinal cord, facilitating the transmission of signals.
- Conclusion: **Statement II is correct.**

3. **Evaluate Statement III:**
- Statement: "Medulla contains controlling centers for respiration, cardiovascular reflexes, and gastric secretion."
- Analysis: The medulla oblongata is responsible for autonomic functions, including the regulation of breathing (respiration), heart rate (cardiovascular reflexes), and digestive processes (gastric secretion).
- Conclusion: **Statement III is correct.**

### Final Conclusion:
Since all three statements (I, II, and III) are correct, we can conclude that the correct option is:

- **Option 1: All are correct.**