What are the passageways containing blood vessels, lymph capillaries and nerves in bone tissue called?

• A. Canaliculi
• B. Lacunae
• C. Volkmann's canals
• D. Haversian Canals

Answer: (D)

The passageways through which blood vessels and nerves run in compact bone are the Haversian canals. These central channels run lengthwise through each osteon and house the blood vessels and nerves that supply bone tissue. They are surrounded by concentric lamellae, with osteocytes located in lacunae and connected by canaliculi to allow nutrient exchange and signaling. Perforating canals (Volkmann's canals) connect adjacent Haversian canals and link the vascular system to the periosteum, helping spread blood supply. The other structures have different roles: canaliculi are tiny channels between lacunae, lacunae are the spaces for osteocytes, and Volkmann's canals are the transverse connections between osteons. Lymph capillaries are not typically part of this bone vascular system.