BIO210Y5 Chapter Notes - Chapter 7: Bone, Hyaline Cartilage, Appendicular Skeleton
Document Summary
4. 13 bone provides a strong framework for the body. Bone, or osseous tissue, contains a small volume of ground substance about two thirds of the bone matrix consists of a mixture of calcium salts (calcium phosphate and calcium carbonate) The rest of the matrix is dominated by collagen fibers. In bone, the presence of the minerals surrounding the collagen fibers produces a strong, somewhat flexible combination that is highly resistant to shattering. A typical long bone is hollow with its walls containing two different types of bone: the weight bearing outer layer consists of well organized compact bone, a finer network of spongy bone lines the internal cavity. In compact bone, the matrix is organized in concentric layers around branches of blood vessels within the bone. Compact bone also has a superficial layer of bone that was deposited during appositional growth of the bone (matrix is solid and calcified so interstitial growth cannot occur)
