ANA300Y1 Lecture Notes - Lecture 8: Bone Marrow, Dense Irregular Connective Tissue, Bone
Document Summary
Inner surface of compact bone is coverted with trabeculae of spongy bone while periosteum on outside of the bone, there is endosteum (endo=within) on inside of the bone (internal surfaces of the bone) Bone tissue initially, it is very less organized then it gets remodeled change the bone but they do that in response to stress of tissue it experiences. Bone coverings: periosteum consists of 2 layers: superficial fibrous layer (dense irregular connective tissue rich in collagen type 1), deep cellular layer (full of osteo progenitor cells and. Osteoblasts will start secreting bone matrix, however a bit misshapen osteocytes won"t be in the cellular layer, osteoprogenitor cells + osoteoblasts yes. Bone coverings: endosteum lines the: marrow cavity (yellow marrow), trabeculae of spongy bone, central & perforating canals of compact bone. Endosteum functions in bone growth, repair, remodeling constantly changing shape of spicules, stress lines change a bit bone is turning over, constantly remodeling.
