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