The number of cervial vertebrae in mammals including human beings are

Options

A. 9
B. 8
C. 7
D. 10

Answer

To determine the number of cervical vertebrae in mammals, including humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Vertebral Column**: The vertebral column in mammals is divided into different regions: cervical, thoracic, lumbar, sacral, and coccygeal.

2. **Identifying Cervical Vertebrae**: The cervical region is the uppermost part of the vertebral column. It is important to note that this region is consistent across most mammals, including humans.

3. **Counting Cervical Vertebrae**: In humans and most mammals, there are **7 cervical vertebrae**. These are labeled as C1 through C7.

4. **Verifying with Other Vertebrae**: To confirm, we can also look at the other regions:
- **Thoracic Vertebrae**: 12 (T1 to T12)
- **Lumbar Vertebrae**: 5 (L1 to L5)
- **Sacral Vertebrae**: 5 (which fuse to form the sacrum)
- **Coccygeal Vertebrae**: 4 (which fuse to form the coccyx)

5. **Conclusion**: Therefore, the total number of cervical vertebrae in mammals, including humans, is **7**.

### Final Answer:
The number of cervical vertebrae in mammals, including human beings, is **7** (Option C).

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