Which part of the brain is directly concerned with the control of heart?

Options

A. Cerebrum
B. Diencephalon
C. Pons verolii
D. Medulla oblongata

Answer

To determine which part of the brain is directly concerned with the control of the heart, we can analyze the options provided and their functions step by step.

### Step-by-Step Solution:

1. **Identify the Options**: The question presents several parts of the brain as options: Cerebrum, Diencephalon, Pons Varolii, and Medulla Oblongata.

2. **Analyze the Cerebrum**:
- The cerebrum is primarily responsible for higher brain functions such as intelligence, planning, and execution of voluntary actions.
- **Conclusion**: It does not directly control the heart.

3. **Analyze the Diencephalon**:
- The diencephalon contains structures like the thalamus and hypothalamus, and it is involved in various functions including hormone regulation and sensory information processing.
- It also houses the pineal gland, which is involved in melatonin production.
- **Conclusion**: It does not directly control the heart.

4. **Analyze the Pons Varolii**:
- The pons is involved in regulating respiration through the pneumotaxic center, which helps control the rhythm of breathing.
- **Conclusion**: It does not directly control the heart.

5. **Analyze the Medulla Oblongata**:
- The medulla oblongata is a crucial part of the brainstem that regulates vital autonomic functions, including heart rate and respiration.
- It contains centers that control the heart and is involved in the autonomic nervous system.
- **Conclusion**: The medulla oblongata is directly responsible for controlling the heart.

6. **Final Answer**: Based on the analysis, the part of the brain that is directly concerned with the control of the heart is the **Medulla Oblongata**.