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  2. Osteoclast - Wikipedia

    en.wikipedia.org/wiki/Osteoclast

    An osteoclast (from Ancient Greek ὀστέον (osteon) 'bone' and κλαστός (clastos) 'broken') is a type of bone cell that breaks down bone tissue.This function is critical in the maintenance, repair, and remodeling of bones of the vertebral skeleton.

  3. Osteoporosis - Wikipedia

    en.wikipedia.org/wiki/Osteoporosis

    It is the most common reason for a broken bone among the elderly. [3] Bones that commonly break include the vertebrae in the spine, the bones of the forearm, the wrist, and the hip. [8] [9] Until a broken bone occurs there are typically no symptoms. Bones may weaken to such a degree that a break may occur with minor stress or spontaneously.

  4. Bone resorption - Wikipedia

    en.wikipedia.org/wiki/Bone_resorption

    Bone tissue is a dynamic system with active metabolism. [24] Bone tissue remodelling or bone remodeling is a successive chain of old bone matrix removal and its replacement with a new one. [25] These processes make a child’s skeleton grow and extend, while childhood is characterized by bone tissue growth rather than its resorption.

  5. Ossification - Wikipedia

    en.wikipedia.org/wiki/Ossification

    Bone is broken down by osteoclasts, and rebuilt by osteoblasts, both of which communicate through cytokine (TGF-β, IGF) signalling. Ossification (also called osteogenesis or bone mineralization) in bone remodeling is the process of laying down new bone material by cells named osteoblasts. It is synonymous with bone tissue formation. [1]

  6. Bone healing - Wikipedia

    en.wikipedia.org/wiki/Bone_healing

    The osteoblasts form new lamellar bone upon the recently exposed surface of the mineralized matrix. This new lamellar bone is in the form of trabecular bone. Eventually, all of the woven bone and cartilage of the original fracture callus is replaced by trabecular bone, restoring most of the bone's original strength. [citation needed]

  7. Why do bones break? - AOL

    www.aol.com/why-bones-break-184700306.html

    "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 ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Osteoblast - Wikipedia

    en.wikipedia.org/wiki/Osteoblast

    Osteoclasts break down bone tissue, and along with osteoblasts and osteocytes form the structural components of bone. In the hollow within bones are many other cell types of the bone marrow . Components that are essential for osteoblast bone formation include mesenchymal stem cells (osteoblast precursor) and blood vessels that supply oxygen and ...