Perichondrial cells are concerned with  

Options

A. growth, differention and dedifferentiation
B. growth, development and differentiation
C. growth, regeneration and repair
D. growth, redifferentation and development

Answer

To answer the question regarding the function of perichondrial cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Perichondrial Cells**:
- Perichondrial cells, also known as chondroblasts, are specialized cells that play a crucial role in the formation of cartilage. They are located in the perichondrium, which is a layer of connective tissue surrounding developing cartilage.

2. **Identifying Functions**:
- The primary functions of perichondrial cells include:
- **Growth**: They contribute to the growth of cartilage.
- **Protection**: They help protect the cartilage and underlying structures from injury.
- **Regeneration and Repair**: They assist in the regeneration of cartilage tissue, especially during recovery from injury.

3. **Evaluating Options**:
- Now, we will evaluate the provided options:
- **Option A**: Growth, differentiation, and de-differentiation - This option is partially correct as it mentions growth, but differentiation and de-differentiation are not primary functions of perichondrial cells.
- **Option B**: Growth, development, and differentiation - This option is also partially correct but includes differentiation, which is not a main function of perichondrial cells.
- **Option C**: Growth, regeneration, and repair - This option accurately describes the functions of perichondrial cells, as they are involved in growth and play a significant role in regeneration and repair of cartilage.
- **Option D**: Growth, de-differentiation, and development - This option is incorrect as it includes de-differentiation, which is not a function of perichondrial cells.

4. **Conclusion**:
- After evaluating all options, the correct answer is **Option C: Growth, regeneration, and repair**. This option best describes the functions of perichondrial cells.