Bone has longitudinal canals , called

Options

A. Central canals
B. Haversian canals
C. Volkmann's canals
D. None of the above.

Answer

**Step-by-Step Text Solution:**

1. **Identify the Question**: The question asks about the longitudinal canals present in bones.

2. **Provide the Answer**: The longitudinal canals in bones are known as **Haversian canals**.

3. **Explain the Haversian Canals**:
- Haversian canals are microscopic tubes located in the outermost region of the bone, known as the **cortical bone**.
- Their primary function is to allow **blood vessels** and **nerves** to travel through them.

4. **Function of Haversian Canals**:
- They provide a supply of nutrients and oxygen to the bone cells, specifically to the **osteocytes** (the mature bone cells).
- This supply is essential for the maintenance and health of the bone tissue.

5. **Structure of Haversian Canals**:
- Haversian canals are surrounded by structures that contain osteocytes.
- These osteocytes are connected to each other and to the Haversian canals through smaller channels known as **canaliculi**.

6. **Summary**: In summary, Haversian canals are essential for the vascularization and innervation of bones, ensuring that osteocytes receive the necessary nutrients for their survival and function.

---