The vertebrae atlas and axis belong to :

Options

A. A) cervical
B. B) thoracic
C. C) lumbar
D. D) coccygeal

Explanation

To determine which category the vertebrae atlas and axis belong to, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Vertebrae**: The atlas and axis are specific vertebrae in the vertebral column. The atlas is the first cervical vertebra, and the axis is the second cervical vertebra.

2. **Understand Their Function**: The atlas supports the skull and allows for nodding movements (up and down), while the axis has an odontoid process (dens) that allows the atlas to rotate around it, enabling side-to-side head movements.

3. **Categorize the Vertebrae**: Vertebrae are categorized into different regions: cervical, thoracic, lumbar, and coccygeal. The atlas and axis are both located in the cervical region.

4. **Confirm the Joint Type**: The joint between the atlas and axis is a pivot type joint, which allows for rotational movement of the head.

5. **Select the Correct Option**: Since both the atlas and axis are cervical vertebrae, the correct answer is option A, which is cervical.

### Final Answer:
The vertebrae atlas and axis belong to: **Option A - Cervical**.

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