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a ground substance made of other organic compounds; The collagen and hydroxyapatite are held together by a strong protein-mineral bond that provides bone with its strength and its ability to remain long after the soft tissue of a body has been degraded. [4] The process that degrades bone is referred to as diagenesis.
In bone, osteoclasts are found in pits in the bone surface which are called resorption bays, or Howship's lacunae. Osteoclasts are characterized by a cytoplasm with a homogeneous, "foamy" appearance. This appearance is due to a high concentration of vesicles and vacuoles. These vacuoles include lysosomes filled with acid phosphatase.
Bone remodeling is a process which maintains bone strength and ion homeostasis by replacing discrete parts of old bone with newly synthesized packets of proteinaceous matrix. [5] Bone is resorbed by osteoclasts, and is deposited by osteoblasts in a process called ossification. [6] Osteocyte activity plays a key role in this process. Conditions ...
Lipids and fatty acids in the bone and in the fat tissues tend to stain the bone brown. Oxidising bleaches may be used to whiten the bone, but if too much is used the perchlorate or hypochlorite damages the bone tissue, leaving it chalky and brittle. Hydrogen peroxide at quite low concentrations, say 1% to 3% replenished every few days, is less ...
Bone as a material is very complex because of its hierarchal structure in which characteristics vary across length scales. [94] [95] At the basic scale, bone is composed of an organic matrix of collagen type-I. [94] Collagen type-I molecules form a composite material with hydroxyapatite to make up collagen fibrils. [95]
"Bones break because of either two main reasons. One, the force on the broken is stronger than the bone can take. Or two, the bone itself is weakened for some reason," said Dr. Claire Shannon, a ...
Bone is a rigid organ that constitutes part of the vertebral skeleton. Bones support and protect the various organs of the body, produce red and white blood cells, store minerals and also enable mobility. Bone tissue is a type of dense connective tissue. Bones come in a variety of shapes and sizes and have a complex internal and external structure.
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