Here’s a summary of the roles the three perform. Spongy bone can be converted to compact bone by the action of osteoblasts, bone cells that secrete the material that creates the compact bone matrix. Osteoblasts, osteocytes, and osteoclasts are interrelated types of cells found in the bone. Osteoblasts excrete a cellular matrix, and as they do, they get trapped. OSTEOCYTES are cells inside the bone. Osteocytes are located inside the bone and have a connection with each other and with other cells with the help of their long branches. Osteoblasts, Osteocytes, and Osteoclasts These cells then turn into osteocytes. Named after the Greek word for ‘bone’, these cells perform specific functions within the bone. Osteocytes have an average half life of 25 years, they do not divide, and they are derived from osteoprogenitors, some … Apoptotic osteocytes are found in unloaded bones or in bones exposed to high levels of mechanical strain. They are derived from osteoprogenitor cells, some of which differentiate into active osteoblasts. Osteocytes positioned close to a blood vessels can take on nutrients and expel waste products through tiny interconnecting channels on the surface of the trabeculae called canaliculi. Osteocytes are found in small, round cavities called lacunae and have thin, cytoplasmic branches. Osteon, the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, the Haversian canal (named for Clopton Havers, a 17th-century English physician).The Haversian canal contains small blood vessels responsible for the blood supply to osteocytes (individual bone cells). In both cases, increased apoptosis in osteocytes is observed before any evidence of increased osteoclast resorption, and apoptotic osteocytes accumulate in areas that are … Osteocytes are at the perfect position to sense any pressure or mechanical strain in the bone. It is estimated that osteocytes comprise about 95% of the total of cells of the bone. Osteoblasts are connective tissue cells and can be found on the exterior of the bone. Where can osteocytes be found within compact bone? Osteocytes do not divide and have an average half life of 25 years. An osteocyte, a star-shaped type of bone cell, is the most commonly found cell in mature bone tissue, and can live as long as the organism itself. Osteocytes located to close to the blood vessel, which can take on nutrients and expel the waste material with the help of tiny interconnecting channels found on the surface of trabeculae, known as Canaliculi. An estimated 10-20 percent of osteoblasts end up being differentiated into osteocytes. Compact Bones: Compact bones are a part of the skeletal system in the body. In addition, the lacunae and the canaliculi of osteoid osteocytes were sometimes larger than those in nonfluorotic bone. Spongy bone can also convert to the compact bones through the osteoblasts action. These bone-forming cells can be stimulated to create osteocytes. Degenerating osteocytes were found occasionally in the peripheral portion of wide osteoid seams and also in the adjacent mineralizing front. The adult human body has about 42 billion of them. Some of the osteoblasts turn into osteocytes while the new bone is being formed, and the osteocytes then get surrounded by new bone. The adult human body has about 42 billion osteocytes. They are not isolated, however, because they send out long branches that connect to the other osteocytes. They also come from osteoblasts. 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