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Where are osteocytes found within bone tissue?

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Internal structure of a human long bone — bone A long bone of the human body, showing a magnified cross section of the interior.

Osteocytes are mature bone cells found embedded within the mineralized bone matrix. They reside in small, individual cavities known as lacunae.123

These cells are not isolated; they maintain an extensive communication network by extending long, slender cytoplasmic processes—also called dendritic processes—through microscopic channels in the bone substance known as canaliculi. This lacuno-canalicular network allows osteocytes to connect with one another, with free bone surfaces, and with blood vessels located in central canals, such as the Haversian canals found within osteons. Through this system, osteocytes facilitate the exchange of nutrients, waste products, and biochemical signals necessary for maintaining bone homeostasis and regulating bone remodeling.132