In the matrix lies the bone cells, called
Or
Cells that maintain marrow cells are called

Options

A. ostecoytes
B. chondrocytes
C. osteoclasts
D. none of these

Answer

To solve the question, we need to identify the correct terms related to bone cells and marrow cells. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Understanding Bone Cells**: The question asks about the cells that lie in the matrix of bones. Bone cells are primarily categorized into three types: osteoblasts, osteocytes, and osteoclasts.

2. **Identifying Osteoblasts**: Osteoblasts are the immature bone-forming cells. They are responsible for the synthesis and mineralization of bone during the process of bone formation.

3. **Maturation of Osteoblasts**: Once osteoblasts mature, they become osteocytes. Osteocytes are the mature bone cells that maintain the bone matrix and communicate with other bone cells.

4. **Understanding Marrow Cells**: The question also refers to cells that maintain marrow cells. Marrow cells, specifically, refer to the cells involved in the formation of bone, which are also osteoblasts.

5. **Evaluating Options**:
- **Osteocytes**: These are the mature bone cells that maintain the bone matrix.
- **Chondrocytes**: These are cartilage-forming cells, not related to bone.
- **Osteoclasts**: These are bone-resorbing cells, which break down bone tissue.

6. **Conclusion**: Based on the definitions and functions of these cells, the correct answer to the question is **Osteocytes**, as they are the cells that lie in the bone matrix and maintain the bone structure.

### Final Answer:
The bone cells that lie in the matrix are called **Osteocytes**.

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