In which of the following tissue, the matrix is not a product of synthesis of its cells ?

Options

A. Vascular tissue
B. osseous tissue
C. Loose connective tissue
D. Adipose tissue

Answer

To determine which tissue has a matrix that is not a product of synthesis by its own cells, we will analyze each of the given options step by step.

### Step-by-Step Solution:

1. **Understanding the Matrix**:
- The matrix in tissues is the material that surrounds the cells. It can be composed of various substances, including proteins, fibers, and ground substance. The matrix plays a crucial role in providing structural support, flexibility, and other functions.

2. **Analyzing the Options**:
- **Option A: Vascular Tissue**:
- Vascular tissue includes blood and lymph. The matrix in blood (plasma) is produced by the blood cells (like red blood cells, white blood cells, and platelets). Therefore, the matrix is a product of the cells in vascular tissue.

- **Option B: Osseous Tissue**:
- Osseous tissue, or bone tissue, has a matrix that is primarily made up of mineralized components (like calcium phosphate) and collagen fibers. However, the mineral components are not synthesized by the bone cells (osteocytes, osteoblasts). Instead, they are deposited from the bloodstream. Thus, the matrix in osseous tissue is not a direct product of its cells.

- **Option C: Loose Connective Tissue**:
- Loose connective tissue has a matrix that is synthesized by its own cells (fibroblasts). The matrix includes collagen and elastin fibers, which are produced by these cells. Therefore, this option does not fit the criteria.

- **Option D: Adipose Tissue**:
- Adipose tissue consists of fat-storing cells (adipocytes) that produce their own matrix. The matrix in adipose tissue is also synthesized by the adipocytes, making this option incorrect.

3. **Conclusion**:
- After analyzing all the options, we find that the correct answer is **Option B: Osseous Tissue**, as its matrix is not a product of synthesis by its own cells.

### Final Answer:
**B: Osseous Tissue**

---