The bone matrix consists of

Options

A. 65% inorganic matter and 35% organic matter
B. 30% inorganic matter and 70% organic matter
C. 60% inorganic matter and 40% organic matter
D. 40% inorganic matter and 60% organic matter

Answer

### Step-by-Step Solution:

1. **Understanding Bone as a Tissue**:
- Bone is classified as a connective tissue, which is specialized for support and protection of softer tissues and organs in the body.

2. **Components of Bone**:
- The bone matrix is composed of both organic and inorganic materials.

3. **Organic Matter in Bone**:
- Approximately 35% of the bone matrix is organic matter, primarily consisting of collagen fibers (Type I collagen). These fibers provide flexibility and tensile strength to the bone.

4. **Inorganic Matter in Bone**:
- About 65% of the bone matrix is inorganic matter, which mainly includes calcium phosphate in the form of hydroxyapatite crystals. This component is responsible for the hardness and rigidity of the bone.

5. **Conclusion**:
- Therefore, the bone matrix consists of approximately 35% organic matter (mainly collagen) and 65% inorganic matter (mainly calcium phosphate).

### Final Answer:
The bone matrix consists of approximately 35% organic matter (collagen) and 65% inorganic matter (calcium phosphate).

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