Haversian lamellae are the structures found in :

Options

A. Hyaline cartilage
B. Fibrous cartilage
C. Bone
D. Myelin sheath

Answer

**Step-by-Step Solution:**

1. **Understanding Haversian Lamellae**: Haversian lamellae are concentric rings of bone matrix that surround the Haversian canals in compact bone. They are part of the structural organization of bone tissue.

2. **Identifying Haversian Canals**: Haversian canals are central canals within the bone that contain blood vessels and nerves. They are crucial for the nourishment and communication within the bone.

3. **Location of Haversian Lamellae**: Since Haversian lamellae are associated with Haversian canals, they are found within the bone structure, specifically in compact bone.

4. **Evaluating Other Options**:
- **Hyaline Cartilage**: This type of cartilage is found in areas like the nose and joints, but it does not contain Haversian lamellae.
- **Fibrous Cartilage**: This is stronger than hyaline cartilage and is found in structures like the knee and wrist, but again, it does not contain Haversian lamellae.
- **Myelin Sheath**: This is a protective covering around nerves and is unrelated to bone structure.

5. **Conclusion**: Based on the above points, the correct answer to the question "Haversian lamellae are the structures found in:" is **Bone**.