What is the main function of the Haversian canals within bone?

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BlackTom AI · Accepted Answer

When tackling the question about the main function of the Haversian canals within bone, it helps to recall the role these canals play in bone anatomy and physiology.
Option a: 'Is the site of osteoblast and osteoclast growth.' While bone remodeling involves osteoblasts and osteoclasts, their activity is not the primary function of the Haversian canals themselves. Osteoblasts and osteoclasts operate in the bone matrix and periosteum/endosteum, not specifically within the Haversian canal system.
Option b: 'Is the pathway of the blood vessel through the bone.' This option correctly identifies the primary function of the Haversian (central) canals, which house blood vessels and nerve fibers that run parallel to the bone’s long axis, supplying nutrients and removing wastes from osteons.
Option c: 'Provides structural integrity to the bone.' Structural integrity is largely achieved by the overall lamellar arrangement and the cortical/trabecular architecture, not by the Haversian canals themselves. While canals assist nutrient delivery, they are not the main structural framework.
Option d: 'Holds the bone marrow,' This is inaccurate for Haversian canals. Bone marrow resides in the medullary cavity and within trabecular spaces, not inside the Haversian canals, which contain vessels and nerves but not marrow.
In summary, the canal system's central feature is to host vessels and nerves that enable vascular supply to the bone tissue, aligning with option b as the accurate description of the Haversian canal’s main function.

NUT1103 S2 2025 Mid-semester exam

What is the main function of the Haversian canals within bone?

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