The total number of vertebrae in man is

Options

A. Cervical = 8 , Thoracic = 12 , Lumbar = 4 , sacrum = , (1)5 Coccyx = (1)4
Total No . Of bones 33
B. Cervical = 6 , Thoracic = 12 , Lumbar = 5, sacrum =(1)4 , Coccyx = (1)4
Total No . Of bones 31
C. Cervical = 6, Thoracic =12 , Lumbar = 5, sacrum = (1)4 Coccyx = (1)4
Total No . Of bones 32
D. Cervical = 7 , Thoracic =12 , Lumbar = 5, Sacrum =(1)5 , Coccyx = (1)4
Total No . of bones 33

Answer

To determine the total number of vertebrae in humans, we can break down the vertebral column into its different regions and count the vertebrae in each region.

### Step-by-Step Solution:

1. **Identify the Regions of the Vertebral Column**:
- The vertebral column is divided into five regions: cervical, thoracic, lumbar, sacral, and coccygeal.

2. **Count the Vertebrae in Each Region**:
- **Cervical Region**: There are 7 cervical vertebrae (C1 to C7).
- **Thoracic Region**: There are 12 thoracic vertebrae (T1 to T12).
- **Lumbar Region**: There are 5 lumbar vertebrae (L1 to L5).
- **Sacral Region**: The sacrum consists of 5 fused vertebrae, counted as 1 unit.
- **Coccygeal Region**: The coccyx consists of 4 fused vertebrae, counted as 1 unit.

3. **Calculate the Total Number of Vertebrae**:
- Total = Cervical (7) + Thoracic (12) + Lumbar (5) + Sacral (1) + Coccygeal (1)
- Total = 7 + 12 + 5 + 1 + 1 = 26 vertebrae.

4. **Conclusion**:
- Therefore, the total number of vertebrae in humans is **26**.