Lacunae of bones house …………. while lacunae of cartilages contain …………..

Explanation

**Step-by-Step Solution:**

1. **Understanding Lacunae**: Lacunae are small cavities or spaces found within the matrix of bone and cartilage. They serve as housing for specific types of cells.

2. **Lacunae in Bones**: In bones, the lacunae house osteocytes. Osteocytes are mature bone cells that are derived from osteoblasts, which are the cells responsible for bone formation.

3. **Function of Osteocytes**: Osteocytes play a crucial role in maintaining bone tissue. They respond to mechanical strain and help in the overall maintenance and formation of bone.

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