The central hollow portion of vertebra is

Options

A. Neural canal
B. Central canal
C. Auditory canal
D. Vertebro-arterial canal.

Answer

### Step-by-Step Text Solution:

1. **Understanding the Structure of the Vertebra**: The vertebra is a complex structure that forms part of the vertebral column, which protects the spinal cord and supports the body.

2. **Identifying the Parts of the Vertebra**: The vertebral column is divided into several regions:
- Cervical region (neck area)
- Thoracic region (chest area)
- Lumbar region (lower back)
- Sacral region (base of the spine)
- Coccyx (tailbone)

3. **Recognizing the Function of the Vertebra**: The primary function of the vertebrae is to provide support and protection for the spinal cord, which runs through the vertebral column.

4. **Locating the Central Hollow Portion**: Within each vertebra, there is a central hollow area that is crucial for housing the spinal cord.

5. **Naming the Central Hollow Portion**: This central hollow portion of the vertebra is referred to as the "neural canal" or "spinal canal." It is specifically designed to encase and protect the spinal cord as it extends from the brain.

6. **Eliminating Incorrect Options**:
- The "auditory canal" is related to the ear and not the vertebra.
- The "central canal" does not refer to the vertebra specifically.
- The "vertebro-arterial canal" pertains to arteries and is not the correct term for the hollow portion of the vertebra.

7. **Conclusion**: Therefore, the central hollow portion of the vertebra is known as the **neural canal** or **spinal canal**.