THE ARRANGEMENT OF LAMELLAR BONE IN THE DIAPHYSES – 3
The wall of the diaphysis is formed by thousands of very thin bone plates called bone lamellae (singular: lamella) made up of osteocytes surrounded by extracellular matrix. This wall is composed by three layers of lamellae.
1 – The external or outer circumferential lamellae made of stacks of slightly curved parallel lamellae placed at the periphery of the diaphysis. (Highlighted in blue).
2 – The inner border of the diaphysis, facing the bone marrow, is the internal or inner circumferential lamellae, formed by curved parallel lamellae.(Highlighted in green).
3 – The widest layer contain the intermediate lamellae, placed between both circumferential lamellae. This layer is occupied by Haversian systems and the spaces left between Haversian systems are filled with stretches of parallel bone lamellae. (Highlighted in red).
1 – The external or outer circumferential lamellae made of stacks of slightly curved parallel lamellae placed at the periphery of the diaphysis. (Highlighted in blue).
2 – The inner border of the diaphysis, facing the bone marrow, is the internal or inner circumferential lamellae, formed by curved parallel lamellae.(Highlighted in green).
3 – The widest layer contain the intermediate lamellae, placed between both circumferential lamellae. This layer is occupied by Haversian systems and the spaces left between Haversian systems are filled with stretches of parallel bone lamellae. (Highlighted in red).
