Name the tissues where the following structures occur :
Haversian canals

Explanation

**Step-by-Step Solution:**

1. **Understanding Haversian Canals**: Haversian canals are small tubular structures found in certain types of tissues. They play a crucial role in the anatomy of bones.

2. **Identifying the Tissue**: Haversian canals are specifically found in bone tissue, particularly in the compact bone of mammals.

3. **Function of Haversian Canals**: These canals contain blood vessels and nerve fibers. They are essential for the supply of nutrients and oxygen to the bone cells and for the removal of waste products.

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