Osteocytes are present in fluid filled cavities known as

Options

A. ossein
B. lamellac
C. canaliculi
D. lacunae

Answer

**Step-by-Step Solution:**

1. **Understanding Osteocytes**: Begin by defining what osteocytes are. Osteocytes are mature bone cells that are derived from osteoblasts, which are responsible for bone formation.

2. **Location of Osteocytes**: Identify where osteocytes are located. Osteocytes reside within the mineralized matrix of bone, occupying small spaces.

3. **Identify the Cavity**: Recognize the specific cavities in which osteocytes are found. These cavities are known as lacunae, which are small fluid-filled spaces within the bone matrix.

4. **Review Other Options**: Consider the other options provided in the question:
- **Auscine**: This is incorrect as auscine refers to the extracellular matrix of bone, not the cavities where osteocytes reside.
- **Lamellae**: This is also incorrect because lamellae are thin layers of bone tissue, not cavities.
- **Canaliculi**: This option is incorrect as well; canaliculi are tiny channels that connect lacunae and allow for nutrient exchange but are not the cavities themselves.

5. **Conclusion**: Based on the above analysis, the correct answer to the question is that osteocytes are present in fluid-filled cavities known as **lacunae**.

**Final Answer**: Lacunae

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