The number of pairs of true ribs is

Options

A. 6
B. 7
C. 9
D. 10 .

Answer

To determine the number of pairs of true ribs in humans, follow these steps:

1. **Understand the total number of ribs**: Humans typically have 12 pairs of ribs, which totals 24 individual ribs.

2. **Identify the classification of ribs**: Ribs are classified into three categories:
- True ribs
- False ribs
- Floating ribs

3. **Define true ribs**: True ribs are the first 7 pairs of ribs. They are called "true" because they are directly attached to the sternum (breastbone) via costal cartilages.

4. **Count the true ribs**: Since there are 7 pairs of true ribs, this means there are 7 pairs x 1 = 7 pairs of true ribs.

5. **Conclusion**: Therefore, the number of pairs of true ribs in humans is 7.

**Final Answer**: The number of pairs of true ribs is 7.

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