Assertion :Haversian canals are interconnecting nutritive canals that run usually longitudinally through dense bone of vertebrates. Reason: They contain the blood and nerve supply, each canal serving a series of concentric rings of bone units (lamellae) which surround it.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The Harvesian canal is a central part of the Harvesian or Osteon system which is the fundamental functional unit of a compact bone. This is the central canal in the system and is surrounded by concentric layers of lamellae or compact bone tissue. The harvesian canal contains the bone's blood supplies, connective tissues, nerve fibers and lymphatic vessels. These larger longitudinal canals with blood vessels within carrying nutrients for the bone. Thus, the correct answer is option A.

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