chondrocytes are found in the lacunae of bone tissue?
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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. This constitutes the so-called capsule of the space.
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Cartilage is a flexible connective tissue found in many parts of the body. It can bend a bit, but resists stretching. Its main function is to connect bones together. It is also found in the joints, the rib cage, the ear, the nose, the throat and between the bones of the back.
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Early in fetal development, the skeleton is made of cartilage. Cartilage is a type of dense connective tissue that is composed of collagen and/or elastin fibers and cells called chondrocytes, which are all set in a gel-like substance called the extracellular matrix.
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Bones are organs; although they consist primarily of osseous tissue, bones have a vast supply of nervous tissue in their nerves, fibrous tissue lining their cavities, and muscle and epithelial tissue in their blood vessels.
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Bones are made of connective tissue reinforced with calcium and specialised bone cells. Most bones also contain bone marrow, where blood cells are made. Bones work with muscles and joints to hold our body together and support freedom of movement. This is called the musculoskeletal system.
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Osteocyte. ... Osteocyte, a cell that lies within the substance of fully formed bone. It occupies a small chamber called a lacuna, which is contained in the calcified matrix of bone. Osteocytes derive from osteoblasts, or bone-forming cells, and are essentially osteoblasts surrounded by the products they secreted.
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Resident tissue macrophages of bone, termed osteal macrophages, are recently classified myeloid cells that are distinct from osteoclasts. Osteal macrophages are located immediately adjacent to osteoblasts, regulate bone formation, and play diverse roles in skeletal homeostasis.
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Compact bone, also called cortical bone, dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts, leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells. ... Both types are found in most bones.
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In body tissues, chondrocytes are found in the lacunae. Dense regular connective tissue is characterized by giving strength in all directions. ... Dense regular connective tissue gains its strength from the multitude of actin fibers that make up the bulk of the matrix.
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These spaces are called lacunae, and they house bone-producing cells, called osteocytes, which are united through a network of canals, called canaliculi. The canaliculi supply nutrients via blood vessels, remove cellular wastes, and provide a means of communication between osteocytes.
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Two types of cells—fibroblasts and fat cells—are native to connective tissue. Other cells migrate into connective tissue from the bloodstream to fight diseases. Special types of connective tissue—cartilage and bone—are designed to be stronger and more rigid than most connective tissues.
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The two types of cartilages show differences in histological organization and in the pattern of cell proliferation. In primary cartilages, interstitial cell proliferation occurs in chondrocytes, whereas secondary cartilage shows appositional proliferation. Secondary cartilaginous joints are known as "symphysis".
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Compact bone tissue consists of units called osteons or Haversian systems. Osteons are cylindrical structures that contain a mineral matrix and living osteocytes connected by canaliculi, which transport blood. They are aligned parallel to the long axis of the bone.
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They are formed from two or more cells that fuse together, so the osteoclasts usually have more than one nucleus. They are found on the surface of the bone mineral next to the dissolving bone. OSTEOBLASTS are the cells that form new bone. They also come from the bone marrow and are related to structural cells.
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Answer and Explanation: Osteocytes are the fully matured form of bone cells. Bone cells begin their lives as undifferentiated osteogenic cells.
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['Stem Cells. Pluripotent stem cell. ... ', 'Bone Cells. Colored scanning electron micrograph (SEM) of a freeze-fractured osteocyte (purple) surrounded by bone (gray). ... ', 'Blood Cells. ... ', 'Muscle Cells. ... ', 'Fat Cells. ... ', 'Skin Cells. ... ', 'Nerve Cells. ... ', 'Endothelial Cells.']
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There are two types of bone tissue: compact and spongy. The names imply that the two types differ in density, or how tightly the tissue is packed together. There are three types of cells that contribute to bone homeostasis.