answer:Mrs. Sam Sreyna, the Country Director of Hagar International Foundation in Cambodia, was presented with a letter of appreciation from the Royal University of Phnom Penh. The recognition was in acknowledgement of her involvement in the World Mental Health Day Event.

answer:The Hagar booth at the World Mental Health Day Event held at the Royal University of Phnom Penh showcased their achievements and services.

answer:Compact bone, also known as cortical bone, is the dense outer layer of bone that forms the hard surface of bones. Its structure is arranged in repeating units called osteons or Haversian systems, which are cylindrical structures comprised of concentric layers of bone tissue surrounding a central canal called the Haversian canal. Within each osteon, there are multiple layers of bone tissue called lamellae, which are composed mainly of collagen fibers and mineralized matrix, providing strength and rigidity. The lamellae are arranged in a manner that creates a characteristic pattern called a haversian system. These layers are connected to each other through small channels called canaliculi, which allow for the exchange of nutrients and waste products between individual osteocytes (cells within the bone) and their surrounding environment. The Haversian canal at the center of each osteon contains blood vessels, nerves, and connective tissue called the endosteum. These components provide the osteocytes with necessary nutrients and remove metabolic waste products. Compact bone also contains interstitial lamellae, which are remnants of previous osteons that have been partially resorbed and replaced by new bone tissue during the process of bone remodeling. Overall, the structure of compact bone is highly organized and designed to provide strength, support, and resistance to fractures.

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