Haversian canals are present in :

Options

A. bone matrix
B. bone marrow
C. hyaline cartilage
D. calcified cartilage

Answer

**Step-by-Step Solution:**

1. **Understanding Haversian Canals:**
Haversian canals are microscopic tubes found in the bone matrix. They are part of the structural unit of compact bone, known as an osteon or Haversian system.

2. **Analyzing the Options:**
The question asks where Haversian canals are present. We will evaluate each option provided.

3. **Option 1 - Bone Matrix:**
- Haversian canals are indeed present in the bone matrix. They contain blood vessels and nerves that supply the bone tissue. Therefore, this option is correct.

4. **Option 2 - Bone Marrow:**
- Bone marrow is the soft tissue found within the cavities of bones. Haversian canals do not exist in bone marrow. Thus, this option is incorrect.

5. **Option 3 - Hyaline Cartilage:**
- Hyaline cartilage is a type of connective tissue that provides support and flexibility. Haversian canals are not found in hyaline cartilage. Therefore, this option is also incorrect.

6. **Option 4 - Calcified Cartilage:**
- Calcified cartilage is cartilage that has undergone calcification, where calcium salts are deposited in the matrix. Haversian canals are not present in calcified cartilage. Thus, this option is incorrect as well.

7. **Conclusion:**
- The only correct option is the first one: Haversian canals are present in the bone matrix.

**Final Answer: Haversian canals are present in Bone Matrix.**

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