HLTH108 Lecture Notes - Lecture 7: Haversian Canal, Bone Marrow, Epiphyseal Plate
3 Aug 2018
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13th march 2018: lecture six bone and muscle tissue: It is made up of cells and mineralized extracellular matrix: bone tissue: Major organic component = 90% collagen fibres type 1; other organic compounds such as type v collagen, proteoglycans and glycoproteins. Irregular array of collagen fibers: primary (immature): Temporary with few exceptions replaced by mature in adults. High proportion of osteocytes: secondary (mature): Mature bone: parts of the long bone: Metaphysis with epiphyseal plate: types of bony tissue: Unspecialized stem cell developed from mesenchyme (undergo cell division) Location: inner portion of the periosteum, endosteum and in the canals that contain blood vessels. Responsible for synthesis of the organic component of matrix. Present only on the surface such as cuboidal, columnar and flat. When surrounded by matrix osteoblasts osteocytes. Lacunae (cavities) between and within lamellae (fluid) contains osteocytes. Processes form osteocytes travel through small canals (canaliculi) to communicate with adjacent osteocytes.
