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.
Comey also supported federal agents who sought felony charges in 2015 against then-CIA Director David Petraeus, related to his mishandling of classified information. Comey was appointed by the George W. Bush administration to the position of deputy attorney general, responsible for overseeing Justice Department operations. (He has insisted the FBI is apolitical in its investigations.)