Question

In the diagram of the section of bone tissue given above, certain parts have been indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts which they indicate.

• A. A = Interstitial lamellae, B = Laemae with osteocytes, C = Blood vessels, D = Nerve, E = Canaliculi, F = Haversian canal, G = lamellae
• B. A = Interstitial lamellae, B = Osteocytes in the lacunae, C = Blood vessels, D = Nerve, E = Lamellae, F = Haversian system, G = Canaliculi
• C. A = Interstitial lamellae, B = Osteocytes, C = Nerve, D = Blood vessels, E = Canaliculi, F = Haversian system, G = Lamellae
• D. A = Interstitial lamellae, B = Osteocytes, C = Nerve, D = Blood vessel, E = Lamellae, F = Haversian canal, G = Canaliculi

Answer 1

The correct option is B A = Interstitial lamellae, B = Osteocytes in the lacunae, C = Blood vessels, D = Nerve, E = Lamellae, F = Haversian system, G = Canaliculi

Human compact bone is composed of parallel columns made up of concentric bony layers called lamellae organized around channels containing blood vessels, lymph vessels and nerves. So, here, E is lamellae, C is blood vessel, D is nerve.
The bony columns are arranged in parallel to the axes of the long bones. The central canals and their surrounding lamellae are collectively known as Haversian systems. So, here F is Haversian system. There are certain irregular areas of interstitial lamellae which apparently do not belong to any Haversian system and are found in between the Haversian systems. Here, A is interstitial lamellae. Canaliculi are the small channels or ducts or tubular passages in the bone. Here, G is canaliculi.
Thus, the correct answer is (B) A = Intersitial lamellae, B = Osteocytes in the lacunae, C = Blood vessels, D = Nerve, E = Lamellae, F = Haversian system, G = Canaliculi