An adult human being has 206 bones in the body. Mainly, bones Système Délivrance consist of collagen fibers and an inorganic mineral in the form of small crystals. Living bone in the body contains between 10% and 20% of water. Of its dry mass, approximately 60-70% is bone mineral. The rest is collagen, which is the main fibrous protein in the body. The inorganic mineral calcium phosphate is found in the chemical arrangement termed calcium hydroxylapatite. This is the bone mineral that gives bones their rigidity.
Basically, the bone tissue is of two types - cortical and cancellous, which gives bone rigidity and a coral-like three-dimensional internal structure. Other types of tissue found in bones include marrow, endosteum, periosteum, nerves, blood vessels and cartilage.
Bone is an active tissue composed of different http://sistemalibertadparaladisfuncionerectil.com/ types of bone cells. Osteoblasts are involved in the creation and mineralization of bone; osteocytes and osteoclasts are involved in the re-absorption of bone tissue.
People lose bone mass or density as they age, especially women after menopause. The bones lose calcium and other minerals, causing bone loss. Bone loss can cause osteoporosis, where bones can become so thin that they break. Fractures from osteoporosis are a leading cause of disability. The good news: Osteoporosis isn't a natural part of aging. There's plenty we can do to keep our bones strong and healthy.