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  2. Osteocyte - Wikipedia

    en.wikipedia.org/wiki/Osteocyte

    An osteocyte, an oblate shaped type of bone cell with dendritic processes, is the most commonly found cell in mature bone. It can live as long as the organism itself. [1] The adult human body has about 42 billion of them. [2] Osteocytes do not divide and have an average half life of 25 years.

  3. Bone canaliculus - Wikipedia

    en.wikipedia.org/wiki/Bone_canaliculus

    Osteocytes do not entirely fill up the canaliculi. The remaining space is known as the periosteocytic space, which is filled with periosteocytic fluid. This fluid contains substances too large to be transported through the gap junctions that connect the osteocytes. In cartilage, the lacunae and hence, the chondrocytes, are isolated from each ...

  4. Lacuna (histology) - Wikipedia

    en.wikipedia.org/wiki/Lacuna_(histology)

    The cartilage cells or chondrocytes are contained in cavities in the matrix, called cartilage lacunae; around these, the matrix is arranged in concentric lines as if it had been formed in successive portions around the cartilage cells.

  5. Osteoblast - Wikipedia

    en.wikipedia.org/wiki/Osteoblast

    Feedback from physical activity maintains bone mass, while feedback from osteocytes limits the size of the bone-forming unit. [32] [33] [34] An important additional mechanism is secretion by osteocytes, buried in the matrix, of sclerostin, a protein that inhibits a pathway that maintains osteoblast activity. Thus, when the osteon reaches a ...

  6. Haversian canal - Wikipedia

    en.wikipedia.org/wiki/Haversian_canal

    Active transport is used to move most substances between the blood vessels and the osteocytes. [1] Haversian canals are contained within osteons, which are typically arranged along the long axis of the bone in parallel to the surface. The canals and the surrounding lamellae (8-15) form the functional unit, called a Haversian system, or osteon.

  7. Cellular extensions - Wikipedia

    en.wikipedia.org/wiki/Cellular_extensions

    Osteocytes, the most common cell type within mature cortical bone, actively participate in the growth and maintenance of TCVs through the transfer of mitochondria to endothelial cells. Scanning electron microscopy images have revealed that osteocytes possess numerous dendritic processes with expanded, endfoot-like structures. These endfeet ...

  8. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  9. Bone - Wikipedia

    en.wikipedia.org/wiki/Bone

    Each column is multiple layers of osteoblasts and osteocytes around a central canal called the osteonic canal. Volkmann's canals at right angles connect the osteons together. The columns are metabolically active, and as bone is reabsorbed and created the nature and location of the cells within the osteon will change.