The box like bony structure which encloses the brain is called :

Options

A. Cranium
B. Pericardium
C. Peritoneum
D. Periosteum

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the bony structure that encloses the brain. This indicates we are looking for a specific part of the skull.

2. **Evaluating the Options**:
- **Option 1: Cranium**: This is the part of the skull that encases the brain. It is a bony structure that provides protection to the brain.
- **Option 2: Pericardium**: This is incorrect as it refers to the double-walled sac that contains the heart, not the brain.
- **Option 3: Peritoneum**: This option is also incorrect. The peritoneum is a serous membrane that lines the abdominal cavity and covers the abdominal organs.
- **Option 4: Parastromium**: This is incorrect as well; it refers to the membrane covering the outer surface of bones, not specifically related to the brain.

3. **Conclusion**: After evaluating all the options, the correct answer is **Option 1: Cranium**, as it is the only structure that fits the description of a box-like bony structure enclosing the brain.

**Final Answer**: The box-like bony structure which encloses the brain is called the **Cranium**.

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