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.
Baseball-Manfred elected next MLB commissioner. BALTIMORE, Aug 14 (Reuters) - Long-time official Rob Manfred, the right-hand man of outgoing Major League Baseball Commissioner Bud Selig, was elected his successor in a vote by team owners on Thursday.