The vertebra which bears the whole weight of the skull is :-

Options

A. Atlas
B. Axis
C. Cervical
D. Lumber

Answer

To solve the question "The vertebra which bears the whole weight of the skull is:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which vertebra supports the weight of the skull. This requires knowledge of the vertebral column and the specific roles of different vertebrae.

2. **Identify the Options**: The options provided are:
- A) Atlas
- B) Axis
- C) Cervical
- D) Lumbar

3. **Analyze Each Option**:
- **Option A: Atlas**: The atlas is the first cervical vertebra (C1) and is specifically designed to support the skull. It allows for the nodding motion of the head.
- **Option B: Axis**: The axis is the second cervical vertebra (C2) and provides a pivot point for the atlas, allowing for rotation of the head. It does not bear the weight of the skull.
- **Option C: Cervical**: While the cervical vertebrae include the atlas and axis, they are not a specific vertebra. The term "cervical" refers to all seven cervical vertebrae, which do not singularly bear the weight of the skull.
- **Option D: Lumbar**: The lumbar vertebrae are located in the lower back and are not involved in supporting the skull at all.

4. **Conclusion**: Based on the analysis, the atlas (Option A) is the correct answer as it is the vertebra that bears the whole weight of the skull.

### Final Answer:
The vertebra which bears the whole weight of the skull is **A) Atlas**.

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