A bursa is a closed, fluid-filled sac that functions as a cushion and provide a gliding surface to reduce friction between tissues of the body around joints. Essentially, a bursa provides a slick surface so that tendons and ligaments can slide across a bony prominence so it doesn't catch or rub against the bone.
Mark Tatum's appointment as NBA Deputy Commissioner is recognition of the confidence our owners and teams have in his leadership ability and track record of success, said Silver.
New York City Police Commissioner. The New York City Police Commissioner is the head of the New York City Police Department. The Commissioner is appointed by the Mayor, and serves at the Mayor's pleasure. The Commissioner is responsible for the day-to-day operation of the department as well as the appointment of deputies and subordinate officers. Commissioners are civilian administrators, and they and their subordinate deputies are civilians under an oath of office, not uniformed members of the force who are sworn officers of the