AEMCA Practice Exam

What is the purpose of Haversian canals?

1. Store fat in bone marrow

2. Supply blood and nerve supply to bone osteocytes

3. Facilitate movement of joints

4. Connect muscles to bones

The correct answer is: Supply blood and nerve supply to bone osteocytes

The purpose of Haversian canals is to supply blood and nerve supply to bone osteocytes. These canals are integral components of compact bone and are part of the Haversian system, which is essential for maintaining bone health and function. The Haversian canals contain blood vessels and nerves that travel through the bone, providing essential nutrients and oxygen to osteocytes—the mature bone cells embedded within the bone matrix. This supply is critical because it helps to keep the bone tissue viable and supports its metabolism, especially since bone tissue is relatively avascular. By facilitating this blood and nerve supply, Haversian canals contribute significantly to the overall functionality and health of the bone, ensuring it can respond to physiological needs and adapt to stress and strain.